A personal computer , often referred to as a PC , is a computer designed for individual use. It is typically used for tasks such as word processing , internet browsing , email , multimedia playback, and gaming . Personal computers are intended to be operated directly by an end user , rather than by a computer expert or technician . Unlike large, costly minicomputers and mainframes , time-sharing by many people at the same time is not used with personal computers. The term home computer has also been used, primarily in the late 1970s and 1980s. The advent of personal computers and the concurrent Digital Revolution have significantly affected the lives of people.
91-618: The Macintosh Classic is a personal computer designed, manufactured and sold by Apple Computer from October 1990 to September 1992. It was the first Macintosh to sell for less than US$ 1,000. Production of the Classic was prompted by the success of the original Macintosh 128K , then the Macintosh Plus , and finally the Macintosh SE . The system specifications of the Classic are very similar to those of its predecessors, with
182-442: A TV set or an appropriately sized computer display , and is often used as a digital photo viewer, music and video player, TV receiver, and digital video recorder. HTPCs are also referred to as media center systems or media servers . The goal is to combine many or all components of a home theater setup into one box. HTPCs can also connect to services providing on-demand movies and TV shows. HTPCs can be purchased pre-configured with
273-401: A kit form and in limited volumes, and were of interest mostly to hobbyists and technicians. Minimal programming was done with toggle switches to enter instructions, and output was provided by front panel lamps. Practical use required adding peripherals such as keyboards, computer displays , disk drives , and printers . Micral N was the earliest commercial, non-kit microcomputer based on
364-511: A multitasking operating system . Eventually, due to the influence of the IBM PC on the personal computer market , personal computers and home computers lost any technical distinction. Business computers acquired color graphics capability and sound, and home computers and game systems users used the same processors and operating systems as office workers. Mass-market computers had graphics capabilities and memory comparable to dedicated workstations of
455-553: A portable computer prototype called SCAMP (Special Computer APL Machine Portable) based on the IBM PALM processor with a Philips compact cassette drive, small CRT , and full function keyboard. SCAMP emulated an IBM 1130 minicomputer in order to run APL/1130. In 1973, APL was generally available only on mainframe computers, and most desktop sized microcomputers such as the Wang 2200 or HP 9800 offered only BASIC . Because SCAMP
546-469: A touchscreen display, which can be controlled using either a stylus pen or finger. Some tablets may use a hybrid or convertible design, offering a keyboard that can either be removed as an attachment, or a screen that can be rotated and folded directly over top the keyboard. Some tablets may use desktop-PC operating system such as Windows or Linux, or may run an operating system designed primarily for tablets. Many tablet computers have USB ports, to which
637-655: A "fine, inexpensive replacement for the Macintosh Plus that best embodies the original Macintosh vision six and a half years later". Computer Gaming World was more skeptical, doubting that consumers would purchase a black-and-white computer with no hard drive that was only slightly faster than the Mac Plus. In the February 1991 edition of Electronic Learning , Robert McCarthy wrote: "Teachers, educational administrators, and software developers are enthusiastic about
728-798: A $ 2,400 list price; it and the new $ 600 12-inch color display were $ 3,500 less expensive than the Macintosh II. Not long after the Apple IIe Card was introduced for the LC, Apple quietly removed the II GS from its price list, forcibly retiring it, as the company wanted to focus its sales and marketing efforts on the LC. The original Macintosh LC was introduced in October 1990, with initial shipments to dealers following in December and January. It
819-455: A 12" monitor, any LC that supports the card can be switched into 560×384 resolution for better compatibility with the IIe's 280×192 High-Resolution graphics (essentially doubled) and 560x192 Double-High-Resolution graphics (doubled only vertically). Computer Gaming World in 1990 criticized the LC as too expensive, stating that consumers would prefer a $ 2,000 IBM PS/1 with VGA graphics to
910-835: A 4096-color palette, stereo sound, Motorola 68000 CPU, 256 KB RAM, and 880 KB 3.5-inch disk drive, for US$ 1,295. IBM's first PC was introduced on 12 August 1981 setting what became a mass market standard for PC architecture. In 1982 The Computer was named Machine of the Year by Time magazine. Somewhat larger and more expensive systems were aimed at office and small business use. These often featured 80-column text displays but might not have had graphics or sound capabilities. These microprocessor-based systems were still less costly than time-shared mainframes or minicomputers. Workstations were characterized by high-performance processors and graphics displays, with large-capacity local disk storage, networking capability, and running under
1001-473: A 55 percent profit margin. The high-right policy led to a series of machines with ever-increasing prices. The original Macintosh plans called for a system around $ 1,000, but by the time it had morphed from Jef Raskin 's original vision of an easy-to-use machine for composing text documents to Jobs's concept incorporating ideas gleaned during a trip to Xerox PARC , the Mac's list price had ballooned to $ 2,495. With
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#17327647642831092-410: A computer that could fit on a desk was remarkably small, leading to the desktop nomenclature. More recently, the phrase usually indicates a particular style of computer case . Desktop computers come in a variety of styles ranging from large vertical tower cases to small models which can be tucked behind or rest directly beneath (and support) LCD monitors . While the term desktop often refers to
1183-557: A computer with a vertically aligned computer tower case , these varieties often rest on the ground or underneath desks. Despite this seeming contradiction, the term desktop does typically refer to these vertical tower cases as well as the horizontally aligned models which are designed to literally rest on top of desks and are therefore more appropriate to the desktop term, although both types qualify for this desktop label in most practical situations aside from certain physical arrangement differences. Both styles of these computer cases hold
1274-510: A desk, including a keyboard, a small one-line display, and printer. The Wang 2200 microcomputer of 1973 had a full-size cathode ray tube (CRT) and cassette tape storage. These were generally expensive specialized computers sold for business or scientific uses. 1974 saw the introduction of what is considered by many to be the first true personal computer, the Altair 8800 created by Micro Instrumentation and Telemetry Systems (MITS) . Based on
1365-415: A few years before. Even local area networking, originally a way to allow business computers to share expensive mass storage and peripherals, became a standard feature of personal computers used at home. An increasingly important set of uses for personal computers relied on the ability of the computer to communicate with other computer systems, allowing interchange of information. Experimental public access to
1456-473: A fixed resolution of 512×384 pixels and a form factor exactly matching the width of the LC chassis, giving the two together a near all-in-one appearance. An Apple 13" 640×480 Trinitron display was also available, but at a list price of $ 999, it cost around half as much as the LC itself. Until the introduction of the LC, the lowest resolution supported on color Macs had been 640×480. Many programs written for color Macintosh II family computers had assumed this as
1547-432: A graphics card installed. For this reason, desktop computers are usually preferred over laptops for gaming purposes. Unlike desktop computers, only minor internal upgrades (such as memory and hard disk drive) are feasible owing to the limited space and power available. Laptops have the same input and output ports as desktops, for connecting to external displays, mice, cameras, storage devices and keyboards. Laptops are also
1638-607: A hardware specification called Handheld PC was later released by Microsoft that run the Windows CE operating system. Macintosh LC The Macintosh LC is a personal computer designed, manufactured, and sold by Apple Computer, Inc. from October 1990 to March 1992. The first in the Macintosh LC family , the LC was introduced with the Macintosh Classic (a repackaging of the older Macintosh SE ) and
1729-487: A hinged second panel containing a flat display screen. Closing the laptop protects the screen and keyboard during transportation. Laptops generally have a rechargeable battery , enhancing their portability. To save power, weight and space, laptop graphics chips are in many cases integrated into the CPU or chipset and use system RAM, resulting in reduced graphics performance when compared to desktop machines, that more typically have
1820-408: A keyboard or mouse can be connected. Smartphones are often similar to tablet computers , the difference being that smartphones always have cellular integration. They are generally smaller than tablets, and may not have a slate form factor. The ultra-mobile PC (UMPC) is a small tablet computer . It was developed by Microsoft , Intel and Samsung , among others. Current UMPCs typically feature
1911-540: A larger screen or use with video projectors. IBM PC-compatible suitcase format computers became available soon after the introduction of the PC, with the Compaq Portable being a leading example of the type. Later models included a hard drive to give roughly equivalent performance to contemporary desktop computers. The development of thin plasma display and LCD screens permitted a somewhat smaller form factor, called
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#17327647642832002-465: A little more expensive compared to desktops, as the miniaturized components for laptops themselves are expensive. Notebook computers such as the TRS-80 Model 100 and Epson HX-20 had roughly the plan dimensions of a sheet of typing paper ( ANSI A or ISO A4 ). These machines had a keyboard with slightly reduced dimensions compared to a desktop system, and a fixed LCD display screen coplanar with
2093-739: A microprocessor, the Intel 8008 . It was built starting in 1972, and a few hundred units were sold. This had been preceded by the Datapoint 2200 in 1970, for which the Intel 8008 had been commissioned, though not accepted for use. The CPU design implemented in the Datapoint 2200 became the basis for x86 architecture used in the original IBM PC and its descendants. In 1973, the IBM Los Gatos Scientific Center developed
2184-430: A minimum, and some were unusable at the lower resolution. For several years software developers had to add support for this lower screen resolution in order to guarantee that their software would run on LCs (as well as Color Classics, introduced 2½ years later, which use the same resolution). Overall, general performance of the machine was disappointing due to the crippling data bus bottleneck, making it run far slower than
2275-481: A new naming scheme: devices without an integrated phone are called Windows Mobile Classic instead of Pocket PC, while devices with an integrated phone and a touch screen are called Windows Mobile Professional. Palmtop PCs were miniature pocket-sized computers running DOS that first came about in the late 1980s, typically in a clamshell form factor with a keyboard. Non-x86 based devices were often called palmtop computers, examples being Psion Series 3 . In later years
2366-406: A preview of features that would later become staples of personal computers: e-mail , hypertext , word processing , video conferencing , and the mouse . The demonstration required technical support staff and a mainframe time-sharing computer that were far too costly for individual business use at the time. Early personal computers—generally called microcomputers—were often sold in
2457-615: A shared mainframe computer system was demonstrated as early as 1973 in the Community Memory project, but bulletin board systems and online service providers became more commonly available after 1978. Commercial Internet service providers emerged in the late 1980s, giving public access to the rapidly growing network. In 1991, the World Wide Web was made available for public use. The combination of powerful personal computers with high-resolution graphics and sound, with
2548-529: A signature of Apple product design for much of the 1990s. The logic board , the central circuit board of the computer, is based on the Macintosh SE design. Its size, however, was reduced using surface-mount technology to 9 × 5 inches (23 × 13 cm), half the size of the SE board. This redesign, and the absence of expansion slots, kept manufacturing costs low. This lack of expansion abilities, along with
2639-655: A television already in the home as the computer display, with low-detail blocky graphics and a limited color range, and text about 40 characters wide by 25 characters tall. Sinclair Research , a UK company, produced the ZX Series—;the ZX80 (1980), ZX81 (1981), and the ZX Spectrum ; the latter was introduced in 1982, and totaled 8 million unit sold. Following came the Commodore 64 , totaled 17 million units sold,
2730-406: A time, they are commonly connected to a local area network and run multi-user operating systems . Workstations are used for tasks such as computer-aided design , drafting and modeling, computation-intensive scientific and engineering calculations, image processing, architectural modeling, and computer graphics for animation and motion picture visual effects. Before the widespread use of PCs,
2821-404: A very low-cost machine with a target price of $ 1,000, a low-cost machine with color graphics, and a more upscale color machine for small business use. In time, these would develop as the Classic, Macintosh LC , and Macintosh IIsi , respectively. MacWEEK magazine reported on July 10, 1990, that Apple had paid $ 1 million to Modular Computer Systems Inc., a subsidiary of Daimler-Benz AG , for
Macintosh Classic - Misplaced Pages Continue
2912-601: A wide range of users, not just experienced electronics hobbyists who had the soldering skills to assemble a computer kit. The Apple I as delivered was still technically a kit computer, as it did not have a power supply, case, or keyboard when it was delivered to the Byte Shop. The first successfully mass-marketed personal computer to be announced was the Commodore PET after being revealed in January 1977. However, it
3003-542: Is a desktop computer that generally comprises a high-performance video card , processor and RAM, to improve the speed and responsiveness of demanding video games . An all-in-one computer (also known as single-unit PCs) is a desktop computer that combines the monitor and processor within a single unit. A separate keyboard and mouse are standard input devices, with some monitors including touchscreen capability. The processor and other working components are typically reduced in size relative to standard desktops, located behind
3094-495: Is a portable computer that provides the full capabilities of a desktop computer . Such computers are currently large laptops. This class of computers usually includes more powerful components and a larger display than generally found in smaller portable computers, and may have limited battery capacity or no battery. Netbooks , also called mini notebooks or subnotebooks , were a subgroup of laptops suited for general computing tasks and accessing web-based applications . Initially,
3185-466: Is most often proprietary, or free and open-source software , which is provided in ready-to-run , or binary form. Software for personal computers is typically developed and distributed independently from the hardware or operating system manufacturers. Many personal computer users no longer need to write their programs to make any use of a personal computer, although end-user programming is still feasible. This contrasts with mobile systems, where software
3276-400: Is often available only through a manufacturer-supported channel, and end-user program development may be discouraged by lack of support by the manufacturer. Since the early 1990s, Microsoft operating systems (first with MS-DOS and then with Windows ) and Intel hardware – collectively called Wintel – have dominated the personal computer market, and today the term PC normally refers to
3367-467: Is the final adaptation of Jerry Manock 's and Terry Oyama's Macintosh 128K industrial design, bringing back some elements of the original while retaining little of the Snow White design language used in the Macintosh SE 's design. The only remnant of the SE is the stripe across the front panel (bezel) for the floppy drive; the distinctive front bezel lines of the SE were not used on the Classic, and
3458-576: Is to get as aggressive on price as we need to be." After the release of the Classic, Apple's share price closed at $ 27.75 per share, down $ 0.50 from October 12, 1990, and far below its previous 12-month high of $ 50.37 . The Classic was released in Europe and Japan concurrently with the United States release. In Japan, the Classic retailed for ¥ 198,000 ( $ 1,523 ), more than in the US but matching
3549-536: The Apple I computer circuit board, which was fully prepared and contained about 30 chips. The Apple I computer differed from the other kit-style hobby computers of era. At the request of Paul Terrell , owner of the Byte Shop , Jobs and Wozniak were given their first purchase order, for 50 Apple I computers, only if the computers were assembled and tested and not a kit computer. Terrell wanted to have computers to sell to
3640-590: The Bendix G15 and LGP-30 of 1956, and the Soviet MIR series of computers developed from 1965 to 1969. By the early 1970s, people in academic or research institutions had the opportunity for single-person use of a computer system in interactive mode for extended durations, although these systems would still have been too expensive to be owned by a single person. The personal computer was made possible by major advances in semiconductor technology. In 1959,
3731-656: The Galaksija (1983) introduced in Yugoslavia and the Amstrad CPC series (464–6128). In the same year, the NEC PC-98 was introduced, which was a very popular personal computer that sold in more than 18 million units. Another famous personal computer, the revolutionary Amiga 1000 , was unveiled by Commodore on 23 July 1985. The Amiga 1000 featured a multitasking, windowing operating system, color graphics with
Macintosh Classic - Misplaced Pages Continue
3822-624: The IBM Personal Computer incorporated the designation into its model name, the term originally described personal computers of any brand. In some contexts, PC is used to contrast with Mac, an Apple Macintosh computer. Since none of these Apple products were mainframes or time-sharing systems, they were all personal computers but not PC (brand) computers. In 1995, a CBS segment on the growing popularity of PC reported: "For many newcomers PC stands for Pain and Confusion." The "brain" [computer] may one day come down to our level [of
3913-578: The Macintosh IIsi (a new entry-level machine for the Macintosh II series ), and offered for half the price of the Macintosh II but significantly lesser in performance overall. The creation of the LC was prompted by Apple's desire to produce a product that could be sold to school boards for the same price as an Apple II GS . It was designed for inexpensive manufacturing, with five major components that robots could assemble. The computer had
4004-644: The Macintosh Plus , which it replaced as Apple's low-end Mac computer: it is up to 25 percent faster than the Plus, about as fast as the SE, and includes an Apple SuperDrive 3.5" floppy disk drive as standard. The SuperDrive can read and write to Macintosh, MS-DOS , OS/2 , and ProDOS disks. The Classic also has an memory expansion slot(up to 4 MB). The Classic uses the System 6 .0.7 operating system with support for all versions up to System 7 .5.5. A hidden Hierarchical File System (HFS) disk volume contained in
4095-405: The lunchbox computer. The screen formed one side of the enclosure, with a detachable keyboard and one or two half-height floppy disk drives, mounted facing the ends of the computer. Some variations included a battery, allowing operation away from AC outlets. A laptop computer is designed for portability with clamshell design, where the keyboard and computer components are on one panel, with
4186-514: The read-only memory (ROM) includes System 6.0.3. The Mac Classic can be booted into System 6.0.3 by holding down the ⌘ Command + ⌥ Option + X + O keys during boot. Some dealers included a software bundle called Smartbundle with the Classic. Also sold separately for $ 349, this includes T/Maker 's WriteNow word processor, Ashton-Tate 's Full Impact spreadsheet program, RecordHolderPlus database, and Silicon Beach Software 's SuperPaint 2.0 paint and draw program. The Macintosh Classic
4277-460: The silicon integrated circuit (IC) chip was developed by Robert Noyce at Fairchild Semiconductor , and the metal–oxide–semiconductor (MOS) transistor was developed by Mohamed Atalla and Dawon Kahng at Bell Labs . The MOS integrated circuit was commercialized by RCA in 1964, and then the silicon-gate MOS integrated circuit was developed by Federico Faggin at Fairchild in 1968. Faggin later used silicon-gate MOS technology to develop
4368-661: The "1977 trinity". Mass-market, ready-assembled computers had arrived, and allowed a wider range of people to use computers, focusing more on software applications and less on development of the processor hardware. In 1977 the Heath company introduced personal computer kits known as Heathkits , starting with the Heathkit H8 , followed by the Heathkit H89 in late 1979. With the purchase of the Heathkit H8 you would obtain
4459-451: The "low-left" of the market it had abandoned years earlier booming with Turbo XTs , and being ignored on the high end for UNIX workstations from the likes of Sun Microsystems and SGI , Apple's fortunes of the 1980s quickly reversed. The Christmas season of 1989 drove this point home, with the first decrease in sales in years, and an accompanying 20 percent drop in Apple's stock price for
4550-522: The 16 MHz 68020-based Macintosh II from 1987, which had an identical processor but ran almost twice as fast. One difference between the Mac II and the Mac LC is the latter had no socket for a 68851 MMU. Therefore, it could not take advantage of System 7 's virtual memory features. The standard configuration included a floppy drive and a 40 MB or 80 MB hard drive, but a version was available for
4641-447: The 68020 is a 32-bit CPU. The LC's memory management chipset places a limit of 10 MB RAM no matter how much was installed. The LC shipped with 256 kB of VRAM, supporting a display resolution of 512×384 pixels at 8-bit color. The VRAM is upgradeable to 512 kB, supporting a display resolution of 512×384 pixels at 16-bit color or 640×480 pixels at 8-bit color. The LC was commonly purchased with an Apple 12" RGB monitor which had
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#17327647642834732-555: The 8-bit Intel 8080 Microprocessor, the Altair is widely recognized as the spark that ignited the microcomputer revolution as the first commercially successful personal computer. The computer bus designed for the Altair was to become a de facto standard in the form of the S-100 bus , and the first programming language for the machine was Microsoft's founding product, Altair BASIC . In 1976, Steve Jobs and Steve Wozniak sold
4823-589: The Apples will have a superior comfort level." Sue Talley, Apple's manager of strategic planning in education, said of the Classic: "we see it going into applications where you need a fair number of powerful stations, but where color is not a big issue." Talley mentioned that it was most suited for writing labs and other basic productivity uses. Many schools decided not to buy the Macintosh Classic because of
4914-547: The Classic at a press conference, announcing that pricing would start at $ 1,000 and saying, "To reach new customers, we didn't just lower the prices of our existing products. We redesigned these computers from the ground up with the features customers have told us they value most." Apple's new pricing strategy caused concern among investors, who thought it would reduce profit margins . Brodie Keast, an Apple product marketing manager, said, "We are prepared to do whatever it takes to reach more people with Macintosh [...] The plan
5005-420: The Classic did not have an internal Processor Direct Slot , making it the first non-expandable desktop Macintosh since the Macintosh Plus . Instead, it had a memory expansion slot. The Classic is an adaptation of Jerry Manock 's and Terry Oyama's 1984 Macintosh 128K industrial design, as had been the earlier Macintosh SE. Apple released two versions. The price and the availability of education software led to
5096-494: The Classic's ease of use and price, but criticized the 9-inch (230 mm) display because a full US letter page (8.5 by 11 inches; 220 mm × 280 mm) would not fit at full size, and warned those who required high-end graphics and desktop publishing capabilities against buying the Classic. Schafer concluded: "The Classic's value is more impressive than its performance, but its performance will get you working on that novel, database, or spreadsheet." PC Week criticized
5187-519: The Classic's popularity in education. It was sold alongside the more powerful Macintosh Classic II in 1991 until its discontinuation the next year. After Apple's co-founder Steve Jobs left Apple in 1985, product development was handed to Jean-Louis Gassée , formerly the manager of Apple France. Gassée consistently pushed the Apple product line in two directions, towards more "openness" in terms of expandability and interoperability, and towards higher price. Gassée long argued that Apple should not aim for
5278-498: The Mac's by-then healthy software base, as well as enabled it to sell for the lower price, as planned. The Classic also featured several improvements over the aging Macintosh Plus, which it replaced as Apple's low-end Mac computer. It is up to 25 percent faster than the Plus and included an Apple SuperDrive 3.5-inch (9 cm) floppy disk drive as standard. Unlike the Macintosh SE/30 and other compact Macs before it,
5369-509: The Macintosh would become "the school machine of the nineties." The Classic was sold to schools for $ 800 . This, and the availability of educational software, led to the Classic's popularity in the education sector. The low-end model was sold with 1 MB of memory, a 1.44 MB floppy drive, no hard disk , and included a keyboard for $ 999. The $ 1,500 model had 2 MB of memory and a 40 MB hard disk. The Classic features several improvements over
5460-503: The PDS slot was offered in a bundle with education models of the LCs. The card allowed the LC to emulate an Apple IIe . The combination of a low-cost color Macintosh with Apple IIe compatibility was intended to encourage the education market to transition from aging Apple II models to the Macintosh platform instead of to the new low-cost IBM PC compatibles . Despite the LC's minimal video specs with
5551-549: The Windows XP, Windows Vista, Windows 7, or Linux operating system , and low-voltage Intel Atom or VIA C7-M processors. A pocket PC is a hardware specification for a handheld-sized computer ( personal digital assistant , PDA) that runs the Microsoft Windows Mobile operating system . It may have the capability to run an alternative operating system like NetBSD or Linux . Pocket PCs have many of
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#17327647642835642-473: The ability to be programmed in both APL and BASIC for engineers, analysts, statisticians, and other business problem-solvers. In the late 1960s such a machine would have been nearly as large as two desks and would have weighed about half a ton. Another desktop portable APL machine, the MCM/70 , was demonstrated in 1973 and shipped in 1974. It used the Intel 8008 processor. A seminal step in personal computing
5733-477: The capabilities of desktop PCs . Numerous applications are available for handhelds adhering to the Microsoft Pocket PC specification, many of which are freeware . Microsoft-compliant Pocket PCs can also be used with many other add-ons like GPS receivers , barcode readers, RFID readers and cameras. In 2007, with the release of Windows Mobile 6, Microsoft dropped the name Pocket PC in favor of
5824-577: The chassis and CPU card to assemble yourself, additional hardware such as the H8-1 memory board that contained 4k of RAM could also be purchased in order to run software. The Heathkit H11 model was released in 1978 and was one of the first 16-bit personal computers; however, due to its high retail cost of $ 1,295 was discontinued in 1982. During the early 1980s, home computers were further developed for household use, with software for personal productivity, programming and games. They typically could be used with
5915-673: The common people] and help with our income-tax and book-keeping calculations. But this is speculation and there is no sign of it so far. In the history of computing , early experimental machines could be operated by a single attendant. For example, ENIAC which became operational in 1946 could be run by a single, albeit highly trained, person. This mode pre-dated the batch programming, or time-sharing modes with multiple users connected through terminals to mainframe computers. Computers intended for laboratory, instrumentation, or engineering purposes were built, and could be operated by one person in an interactive fashion. Examples include such systems as
6006-520: The education market which had an Apple II card in the PDS slot, two floppy drives, and no hard drive. The LC was the final Macintosh model to allow for dual internal floppy drives. The LC, as with other Macs of the day, featured built-in networking on the serial port using LocalTalk . Ethernet was also available as an option via the single PDS slot. If the single expansion slot was a limitation, multifunction cards were available combining Ethernet functionality with an MMU or FPU socket. The Apple IIe Card for
6097-479: The first single-chip microprocessor , the Intel 4004 , in 1971. The first microcomputers , based on microprocessors, were developed during the early 1970s. Widespread commercial availability of microprocessors, from the mid-1970s onwards, made computers cheap enough for small businesses and individuals to own. In what was later to be called the Mother of All Demos , SRI researcher Douglas Engelbart in 1968 gave
6188-556: The infrastructure provided by the Internet, and the standardization of access methods of the Web browsers , established the foundation for a significant fraction of modern life, from bus time tables through unlimited distribution of free videos through to online user-edited encyclopedias. A workstation is a high-end personal computer designed for technical, mathematical, or scientific applications. Intended primarily to be used by one person at
6279-519: The introduction of the IBM PC, portable computers consisting of a processor, display, disk drives and keyboard, in a suit-case style portable housing, allowed users to bring a computer home from the office or to take notes at a classroom. Examples include the Osborne 1 and Kaypro ; and the Commodore SX-64 . These machines were AC-powered and included a small CRT display screen. The form factor
6370-549: The keyboard. These displays were usually small, with 8 to 16 lines of text, sometimes only 40 columns line length. However, these machines could operate for extended times on disposable or rechargeable batteries. Although they did not usually include internal disk drives, this form factor often included a modem for telephone communication and often had provisions for external cassette or disk storage. Later, clamshell format laptop computers with similar small plan dimensions were also called notebooks . A desktop replacement computer
6461-593: The lack of a color monitor, an option that the higher-priced Macintosh LC had. The popular Apple IIe Card also increased the LC's appeal to schools. Although the Classic was more popular at first, by May 1992 the LC (560,000 sold) was outselling the Classic (1.2 million sold). Personal computer Institutional or corporate computer owners in the 1960s had to write their own programs to do any useful work with computers. While personal computer users may develop their applications, usually these systems run commercial software , free-of-charge software (" freeware "), which
6552-427: The lack of a faster processor, stating, "The 7.8 MHz speed is adequate for text applications and limited graphics work, but it is not suitable for power users. As such, the Classic is appropriate as a home computer or for limited computing on the road." Similarly, PC User ' s review concluded, "The slow processor and lack of expansion slots on the Macintosh Classic offset the low prices". MacWEEK described it as
6643-451: The low end of the computer market, where profits were thin, but instead concentrate on the high end and higher profit margins. He illustrated the concept using a graph showing the price-performance ratio of computers with low-power, low-cost machines in the lower left and high-power high-cost machines in the upper right. The "high-right" goal became a mantra among the upper management, who said "fifty-five or die", referring to Gassée's goal of
6734-399: The monitor, and configured similarly to laptops. A nettop computer was introduced by Intel in February 2008, characterized by low cost and lean functionality. These were intended to be used with an Internet connection to run Web browsers and Internet applications. A Home theater PC (HTPC) combines the functions of a personal computer and a digital video recorder . It is connected to
6825-516: The new, lower-cost Apple Macintosh computers". Steve Taffe, manager of instructional strategy at MECC , a developer and publisher of educational software, explained his excitement about the Classic: "[it] is terrific – both because it's a Mac and because of that low price. Everyone can now afford a Macintosh." Scholastic, an educational software developer, was also confident of Apple's ability to compete with MS-DOS machines, stating: "They are just as cost-effective and as powerful as MS-DOS computers, but
6916-782: The price of the Toshiba Dynabook laptop computer. After spending $ 40 million marketing the Classic to first-time buyers, Apple had difficulty meeting the high demand. Apple doubled its manufacturing space in 1990 by expanding its Singapore and Cork, Ireland factories, where the Classic was assembled. Air freight, rather than sea shipping, was used to speed delivery. The shortage caused concern among dealers, who blamed Apple's poor business planning. Macintosh Classics and LCs had been given to Scholastic Software 12 weeks before they were officially announced, and Scholastic planned to release 16 new Macintosh products in 1991. Peter Kelman, Scholastic's publisher, predicted that
7007-503: The primary defining characteristic of netbooks was the lack of an optical disc drive, smaller size, and lower performance than full-size laptops. By mid-2009 netbooks had been offered to users "free of charge", with an extended service contract purchase of a cellular data plan. Ultrabooks and Chromebooks have since filled the gap left by Netbooks. Unlike the generic Netbook name, Ultrabook and Chromebook are technically both specifications by Intel and Google respectively. A tablet uses
7098-401: The quarter. In January 1990, Gassée resigned and his authority over product development was divided among several successors. Many Apple engineers had long been pressing for lower-cost options in order to build market share and increase demand across the entire price spectrum. With Gassée out, a rush started to quickly introduce a series of low-cost machines. Three market points were identified:
7189-498: The required hardware and software needed to add television programming to the PC, or can be assembled from components. Keyboard computers are computers inside of keyboards, generally still designed to be connected to an external computer monitor or television . Examples include the Atari ST , Amstrad CPC , BBC Micro , Commodore 64 , MSX , Raspberry Pi 400 , and the ZX Spectrum . The potential utility of portable computers
7280-408: The right to use the "Classic" name as part of a five-year contract. Apple did not renew the contract when it ended. MacWEEK speculated the Macintosh Classic would use the same 8 MHz Motorola 68000 microprocessor and 9-inch (23 cm) display as its predecessors and that the Classic would be priced from $ 1,500 to 2,150 . On October 15, 1990, John Sculley (then Apple CEO ) introduced
7371-480: The same 9-inch (23 cm) monochrome CRT display, 512 × 342 pixel resolution, and 4 megabyte (MB) memory limit of the older Macintosh computers. Apple's decision to not update the Classic with newer technology such as a newer CPU, higher RAM capacity or color display resulted in criticism from reviewers, with Macworld describing it as having "nothing to gloat about beyond its low price" and "unexceptional". However, it ensured compatibility with
7462-590: The small screen size and Macintosh's popularity in desktop publishing , led to such oddities as video displays that connected through the SCSI port by users seeking to connect a larger full- or dual-page display to their Mac. The Classic design was used once more in 1991 for the Classic II , which succeeded the Classic. Some reviewers of the Macintosh Classic focused on the processor performance and lack of expansion slots. Liza Schafer of Home Office Computing praised
7553-418: The systems hardware components such as the motherboard , processor chip and other internal operating parts. Desktop computers have an external monitor with a display screen and an external keyboard, which are plugged into ports on the back of the computer case. Desktop computers are popular for home and business computing applications as they leave space on the desk for multiple monitors . A gaming computer
7644-572: The ubiquitous Wintel platform. Alternatives to Windows occupy a minority share of the market; these include the Mac platform from Apple (running the macOS operating system), and free and open-source , Unix-like operating systems, such as Linux . Other notable platforms until the 1990s were the Amiga from Commodore , and the PC-98 from NEC . The term PC is an initialism for personal computer. While
7735-407: The vertical lines around its base are replaced by four horizontal vent lines, more reminiscent of the original design. Also, the curve of the front bezel was increased to the same 50-inch (1.3 m) radial curve as on the front of both the Macintosh LC and Macintosh IIsi . The screen brightness dial on this bezel was also removed in favor of a software control. This broad, curved front bezel became
7826-508: Was apparent early on. Alan Kay described the Dynabook in 1972, but no hardware was developed. The Xerox NoteTaker was produced in a very small experimental batch around 1978. In 1975, the IBM 5100 could be fit into a transport case, making it a portable computer, but it weighed about 50 pounds. Such early portable computers were termed luggables by journalists owing to their heft. Before
7917-705: Was back-ordered and not available until later that year. Three months later (April), the Apple II (usually referred to as the Apple) was announced with the first units being shipped 10 June 1977, and the TRS-80 from Tandy Corporation / Tandy Radio Shack following in August 1977, which sold over 100,000 units during its lifetime. Together, especially in the North American market, these 3 machines were referred to as
8008-401: Was intended to allow these systems to be taken on board an airplane as carry-on baggage, though their high power demand meant that they could not be used in flight. The integrated CRT display made for a relatively heavy package, but these machines were more portable than their contemporary desktop equals. Some models had standard or optional connections to drive an external video monitor, allowing
8099-469: Was replaced by Macintosh LC II , which was largely the same but was built around a Motorola 68030 processor. The LC uses a "pizza box" case with a Processor Direct Slot (PDS) but no NuBus slots. It has a 16 MHz Motorola 68020 microprocessor which lacks a floating-point coprocessor (although one could be added via the PDS). The LC has a 16-bit data bus, which is a major performance bottleneck as
8190-453: Was the 1973 Xerox Alto , developed at Xerox 's Palo Alto Research Center (PARC) . It had a graphical user interface ( GUI ) which later served as inspiration for Apple's Macintosh , and Microsoft's Windows operating system. The Alto was a demonstration project, not commercialized, as the parts were too expensive to be affordable. Also in 1973 Hewlett Packard introduced fully BASIC programmable microcomputers that fit entirely on top of
8281-500: Was the first to emulate APL/1130 performance on a portable, single user computer, PC Magazine in 1983 designated SCAMP a "revolutionary concept" and "the world's first personal computer". This seminal, single user portable computer now resides in the Smithsonian Institution , Washington, D.C.. Successful demonstrations of the 1973 SCAMP prototype led to the IBM 5100 portable microcomputer launched in 1975 with
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