A touchscreen (or touch screen ) is a type of display that can detect touch input from a user. It consists of both an input device (a touch panel) and an output device (a visual display). The touch panel is typically layered on the top of the electronic visual display of a device. Touchscreens are commonly found in smartphones , tablets , laptops , and other electronic devices. The display is often an LCD , AMOLED or OLED display.
66-511: The PRADA Phone by LG (KE850) , better known as the LG Prada , is a touchscreen smartphone made by LG Electronics , created in collaboration with Italian luxury designer Prada . It was first announced on 12 December 2006 and was made official in a press release on 18 January 2007. The Prada was the first smartphone with a capacitive touchscreen , thus not requiring the use of a stylus. Its black minimalist look, designed by Kang-Heui Cha,
132-693: A DMB TV receiver. The KE850 Prada was first released in the UK, France and Italy in March 2007, retailing for 600 euros, followed by other European territories as well as Hong Kong, Taiwan, Singapore and South Korea. It was not released in American territories. A silver coloured model of the Prada was released in January 2008. It also featured a virtual QWERTY keyboard in place of T9. The KE850 sold 1 million units in
198-418: A monochrome CRT touchscreen that functioned both as display and sole method of input. The ECC replaced the traditional mechanical stereo , fan, heater and air conditioner controls and displays, and was capable of providing very detailed and specific information about the vehicle's cumulative and current operating status in real time . The ECC was standard equipment on the 1985–1989 Buick Riviera and later
264-485: A 20 MB hard drive. In order to keep up-to-date information during the event, the database of visitor information was updated and remotely transferred to the computer terminals each night. Using the touch screens, visitors were able to find information about the exposition’s rides, attractions, performances, facilities, and the surrounding areas. Visitors could also select between information displayed in English and Japanese;
330-446: A bad reputation of being imprecise until 1988. Most user-interface books would state that touchscreen selections were limited to targets larger than the average finger. At the time, selections were done in such a way that a target was selected as soon as the finger came over it, and the corresponding action was performed immediately. Errors were common, due to parallax or calibration problems, leading to user frustration. "Lift-off strategy"
396-533: A glass covered touchscreen, with monochromatic user interface based on Flash , and there are influences by Prada not only in the interface but some pre-loaded content on the device such as ringtones. There is a Micro SD slot for expandable memory, Bluetooth , and a few other extras include the ability to view PDF and Microsoft Office documents. Four games were pre-loaded: Halloween Fever, Photo Puzzle, Virus, Pipe. The model released in South Korea also featured
462-423: A keyboard. An effective integration of this technology was aimed at helping flight crews maintain a high level of situational awareness of all major aspects of the vehicle operations including the flight path, the functioning of various aircraft systems, and moment-to-moment human interactions. EARLY 80s EVALUATATION FOR CARS - also, in the early 1980s, General Motors tasked its Delco Electronics division with
528-416: A matrix of collimated lights shining orthogonally across the touch surface. When a beam is interrupted by a stylus, the photodetectors which no longer are receiving a signal can be used to determine where the interruption is. Later iterations of matrix based touchscreens built upon this by adding more emitters and detectors to improve resolution, pulsing emitters to improve optical signal to noise ratio , and
594-461: A nonorthogonal matrix to remove shadow readings when using multi-touch. 1963 INDIRECT LIGHT PEN - Later inventions built upon this system to free telewriting styli from their mechanical bindings. By transcribing what a user draws onto a computer, it could be saved for future use. See US 3089918A , Graham, Robert E, "Telewriting apparatus", issued 1963-05-14 . 1965 CAPACITANCE AND RESISTANCE - The first finger driven touchscreen
660-486: A plastic pen and a plastic board with a transparent window where pen presses are detected. It was used primarily with a drawing software application. 1985 MULTI-TOUCH CAPACITANCE - The University of Toronto group, including Bill Buxton, developed a multi-touch tablet that used capacitance rather than bulky camera-based optical sensing systems (see History of multi-touch ). 1985 USED FOR POINT OF SALE - The first commercially available graphical point-of-sale (POS) software
726-500: A project aimed at replacing an automobile's non-essential functions (i.e. other than throttle , transmission , braking , and steering ) from mechanical or electro-mechanical systems with solid state alternatives wherever possible. The finished device was dubbed the ECC for "Electronic Control Center", a digital computer and software control system hardwired to various peripheral sensors , servomechanisms , solenoids , antenna and
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#1732776383470792-426: A prominent role in the design of digital appliances such as personal digital assistants (PDAs) and some e-readers . Touchscreens are important in educational settings such as classrooms or on college campuses. The popularity of smartphones, tablets, and many types of information appliances has driven the demand and acceptance of common touchscreens for portable and functional electronics. Touchscreens are found in
858-492: A reflection of Australia’s overseas tourist market in the 1980s. It is worth noting that Telecom’s Expo Info system was based on an earlier system employed at Expo 86 in Vancouver , Canada . 1990 SINGLE AND MULTI-TOUCH GESTURES - Sears et al. (1990) gave a review of academic research on single and multi-touch human–computer interaction of the time, describing gestures such as rotating knobs, adjusting sliders, and swiping
924-488: A result of heavy industry when those heavy metals sink into the ground contaminating the crops that reside among it. Heavy metal concentrations resulting from water and/or soil pollution can become deadly once they pass certain thresholds, which lead to plant poisoning. Heavy metals can further affect many levels of the ecosystem through bioaccumulation , because humans and many other animals rely on these plant species as sources of food. Plants can pick up these metals from
990-421: A rugged multi-touch capacitive touchscreen, that could sense through a rigid, protective overlay - the sort later required for a mobile phone, was ever developed or patented by Boie. Many of these citations rely on anecdotal evidence from Bill Buxton of Bell Labs. However, Bill Buxton did not have much luck getting his hands on this technology. As he states in the citation: "Our assumption (false, as it turned out)
1056-506: A simple mouse or keypad that capacitively sensed just one finger through a thin insulator. Although not claimed or even mentioned in the patent, this technology could potentially have been used as a capacitance touchscreen. 1993 FIRST RESISTIVE TOUCHSCREEN PHONE - IBM released the IBM Simon , which is the first touchscreen phone. EARLY 90s ABANDONED GAME CONTROLLER - An early attempt at a handheld game console with touchscreen controls
1122-580: A simple x/y pen plotter, eliminating the need for expensive and complicated sputter coating, laser ablation, screen printing or etching. The resulting, incredibly flexible, touchscreen film, less than 100 microns thick, could be attached by static or non-setting weak adhesive to one side of a sheet of glass, for sensing through that glass. Early versions of this device were controlled by the PIC16C54 microchip. 1994 FIRST PUB GAME WITH TOUCHSCREEN - Appearing in pubs in 1994, JPM's Monopoly SWP (skill with prizes)
1188-503: A team around Rainer Mallebrein [ de ] at Telefunken Konstanz for an air traffic control system. In 1970, this evolved into a device named "Touchinput- Einrichtung " ("touch input facility") for the SIG ;50 terminal utilizing a conductively coated glass screen in front of the display. This was patented in 1971 and the patent was granted a couple of years later. The same team had already invented and marketed
1254-620: A television factory in the early 1960s. Then manufactured by CERN, and shortly after by industry partners, it was put to use in 1973. 1972 OPTICAL - A group at the University of Illinois filed for a patent on an optical touchscreen that became a standard part of the Magnavox Plato IV Student Terminal and thousands were built for this purpose. These touchscreens had a crossed array of 16×16 infrared position sensors, each composed of an LED on one edge of
1320-572: A time, and few have had the capability to sense how hard one is touching. This has changed with the commercialization of multi-touch technology, and the Apple Watch being released with a force-sensitive display in April 2015. 2015 BISTATE PROJECTED CAPACITANCE - When used as a Projected Capacitance touchscreen, in mutual capacitance mode, diagonal wiring requires each I/O line to be capable of switching between two states (bistate), an output some of
1386-464: A touchscreen slider, which was later cited as prior art in the lock screen patent litigation between Apple and other touchscreen mobile phone vendors (in relation to U.S. patent 7,657,849 ). 1991 INERTIAL CONTROL - From 1991 to 1992, the Sun Star7 prototype PDA implemented a touchscreen with inertial scrolling . 1993 CAPACITANCE MOUSE / KEYPAD - Bob Boie of AT&T Bell Labs, patented
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#17327763834701452-493: A transparent implementation of an existing opaque touchpad technology, U.S. patent No. 3,911,215, October 7, 1975, which had been developed by Elographics' founder George Samuel Hurst . The resulting resistive technology touch screen was first shown on the World's Fair at Knoxville in 1982. 1982 MULTI-TOUCH CAMERA - Multi-touch technology began in 1982, when the University of Toronto 's Input Research Group developed
1518-407: Is also often more heavily cyclical in investment and employment . Though important to economic development and industrialization of economies , heavy industry can also have significant negative side effects: both local communities and workers frequently encounter health risks, heavy industries tend to produce byproducts that both pollute the air and water , and the industrial supply chain
1584-507: Is displayed, instead of using a mouse , touchpad , or other such devices (other than a stylus, which is optional for most modern touchscreens). Touchscreens are common in devices such as smartphones , handheld game consoles , and personal computers . They are common in point-of-sale (POS) systems, automated teller machines (ATMs), electronic voting machines , and automobile infotainment systems and controls. They can also be attached to computers or, as terminals, to networks. They play
1650-455: Is inherently related to the main production process via reduction of iron with coal. In order to reduce these carbon dioxide emissions, carbon capture and utilization and carbon capture and storage technology is looked at. Heavy industry has the advantage of being a point source which is less energy-intensive to apply the latter technologies and results in a cheaper carbon capture compared to direct air capture . Industrial activities such as
1716-498: Is often involved in other environmental justice issues from mining and transportation . Because of their intensity, heavy industries are also significant contributors to greenhouse gas emissions that cause climate change , and certain parts of the industries, especially high-heat processes used in metal working and cement production, are hard to decarbonize . Industrial activities such as mining also results in pollution consisting of heavy metals. Heavy metals are very damaging to
1782-407: Is the production of large systems, such as the construction of skyscrapers and large dams during the post– World War II era, and the manufacture/deployment of large rockets and giant wind turbines through the 21st century. Many East Asian countries relied on heavy industry as key parts of their development strategies, and many still do for economic growth. This reliance on heavy industry
1848-463: Is typically a matter of government economic policy. Among Japanese and Korean firms with "heavy industry" in their names, many are also manufacturers of aerospace products and defense contractors to their respective countries' governments such as Japan's Mitsubishi Heavy Industries and Fuji Heavy Industries , and Korea's Hyundai Rotem , a joint project of Hyundai Heavy Industries and Daewoo Heavy Industries . In 20th-century communist states ,
1914-459: The Rollkugel mouse RKS 100-86 for the SIG 100-86 a couple of years earlier. 1968 CAPACITANCE - The application of touch technology for air traffic control was described in an article published in 1968. Frank Beck and Bent Stumpe , engineers from CERN (European Organization for Nuclear Research), developed a transparent touchscreen in the early 1970s, based on Stumpe's work at
1980-430: The largest famine in human history , killing up to 50 million people, whilst simultaneously severely depleting the production of agricultural products and not increasing the output of usable-quality industrial goods. Heavy industry is also sometimes a special designation in local zoning laws, allowing placement of industries with heavy impacts (on environment, infrastructure, and employment) with planning. For example,
2046-440: The planning of the economy often focused on heavy industry as an area for large investments (at the expense of investing in the greater production of in-demand consumer goods ), even to the extent of painful opportunity costs on the production–possibility frontier (classically, "lots of guns and not enough butter"). This was motivated by fears of failing to maintain military parity with foreign capitalist powers . For example,
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2112-653: The 1988–1989 Buick Reatta , but was unpopular with consumers—partly due to the technophobia of some traditional Buick customers, but mostly because of costly technical problems suffered by the ECC's touchscreen which would render climate control or stereo operation impossible. 1985 GRAPHIC TABLET - Sega released the Terebi Oekaki, also known as the Sega Graphic Board, for the SG-1000 video game console and SC-3000 home computer . It consisted of
2178-573: The Soviet Union's industrialization in the 1930s , with heavy industry as the favored emphasis, sought to bring its ability to produce trucks, tanks, artillery, aircraft, and warships up to a level that would make the country a great power . China under Mao Zedong pursued a similar strategy, eventually culminating in the Great Leap Forward of 1958–1960; an unsuccessful attempt to rapidly industrialize and collectivize , that led to
2244-420: The city of Brisbane , Australia hosted Expo 88 , whose theme was “leisure in the age of technology”. To support the event and provide information to expo visitors, Telecom Australia (now Telstra ) erected 8 kiosks around the expo site with a total of 56 touch screen information consoles, being specially modified Sony Videotex Workstations. Each system was also equipped with a videodisc player, speakers, and
2310-529: The diagram. There are a number of touchscreen technologies, with different methods of sensing touch. Heavy industry Heavy industry is an industry that involves one or more characteristics such as large and heavy products; large and heavy equipment and facilities (such as heavy equipment , large machine tools , huge buildings and large-scale infrastructure ); or complex or numerous processes . Because of those factors, heavy industry involves higher capital intensity than light industry does, and
2376-444: The environment because they cannot be chemically degraded. Transportation and construction along with their upstream manufacturing supply businesses have been the bulk of heavy industry throughout the industrial age, along with some capital-intensive manufacturing. Traditional examples from the mid-19th century through the early 20th included steelmaking , artillery production, locomotive manufacturing, machine tool building , and
2442-693: The first 18 months. The touch slate design of the Prada would then influence those of other phones by LG, including the LG KS20 Windows Mobile smartphone, and the LG Viewty in 2007. A successor, the LG Prada II (KF900) was announced in October 2008, as well as the LG Prada 3.0 (P940) in 2012. Touchscreen A user can give input or control the information processing system through simple or multi-touch gestures by touching
2508-543: The first human-input multi-touch system, using a frosted-glass panel with a camera placed behind the glass. 1983 OPTICAL - An optical touchscreen was used on the HP-150 starting in 1983. The HP 150 was one of the world's earliest commercial touchscreen computers. HP mounted their infrared transmitters and receivers around the bezel of a 9-inch Sony cathode ray tube (CRT). 1983 MULTI-TOUCH FORCE SENSING TOUCHSCREEN - Bob Boie of AT&T Bell Labs, used capacitance to track
2574-559: The front of the screen. Stumpe and Beck developed a self-capacitance touchscreen in 1972, and a mutual capacitance touchscreen in 1977. Both these devices could only sense the finger by direct touch or through a thin insulating film. This was 11 microns thick according to Stumpe's 1977 report. 1984 TOUCHPAD - Fujitsu released a touch pad for the Micro 16 to accommodate the complexity of kanji characters, which were stored as tiled graphics. 1986 GRAPHIC TABLET - A graphic touch tablet
2640-476: The heavier types of mining . From the late 19th century through the mid-20th, as the chemical industry and electrical industry developed, they involved components of both heavy industry and light industry, which was soon also true for the automotive industry and the aircraft industry . Modern shipbuilding (since steel replaced wood) and large components such as ship turbochargers are also characteristic of heavy industry. A typical heavy industry activity
2706-636: The improper disposal of radioactive material , burning coal and fossil fuels , and releasing liquid waste into the environment contribute to the pollution of water, soil, air, and wildlife. In regards to water pollution, when waste is disposed of in the environment, it affects the quality of the available water supply which has a negative impact on the ecosystem along with water supply used by farms for irrigation which in turn affects crops. Heavy metals have also been shown to pollute soil , deteriorating arable land quality and adversely impacting food safety (such as vegetables or grain ). This occurs as
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2772-429: The invention of a wire based touchscreen in 1994, where one 25 micron diameter, insulation coated wire replaced about 30 of these 80 micron wide tracks, and could also accurately sense fingers through thick glass. Screen masking, caused by the copper, was reduced from 50% to less than 0.5%. The use of fine wire meant that very large touchscreens, several meters wide, could be plotted onto a thin polyester support film with
2838-475: The length of the horizontal sensing elements increases as the width of the touchscreen increases. Eventually, a limit is hit where the resistance gets so great that the touchscreen can no longer function properly. The patent describes how the use of diagonal elements ensures that the length of any element never exceeds 1.414 times the height ⌈ H 2 ⌋ {\textstyle \left\lceil H{\sqrt {2}}\right\rfloor } of
2904-446: The mechanical changes in thickness of a soft, deformable overlay membrane when one or more physical objects interact with it; the flexible surface being easily replaced, if damaged by these objects. The patent states "the tactile sensor arrangements may be utilized as a touch screen". Many derivative sources retrospectively describe Boie as making a major advancement with his touchscreen technology; but no evidence has been found that
2970-560: The medical field, heavy industry , automated teller machines (ATMs), and kiosks such as museum displays or room automation , where keyboard and mouse systems do not allow a suitably intuitive, rapid, or accurate interaction by the user with the display's content. Historically, the touchscreen sensor and its accompanying controller-based firmware have been made available by a wide array of after-market system integrators , and not by display, chip, or motherboard manufacturers. Display manufacturers and chip manufacturers have acknowledged
3036-403: The monitor line scans. About 600 of these were sold for this purpose, retailing at £50 apiece, which was very cheap for the time. Working through very thick glass made it ideal for operation in a "hostile" environment, such as a pub. Although reflected light from the copper wires was noticeable under certain lighting conditions, this problem was eliminated by using tinted glass. The reflection issue
3102-592: The original signal. Effectively, this was used for temporarily drawing arrows or circles onto a live television broadcast, as described in US 2487641A , Denk, William E, "Electronic pointer for television images", issued 1949-11-08 . 1962 OPTICAL - The first version of a touchscreen which operated independently of the light produced from the screen was patented by AT&T Corporation US 3016421A , Harmon, Leon D, "Electrographic transmitter", issued 1962-01-09 . This touchscreen utilized
3168-967: The release of the Nintendo DS in 2004. 2007 MOBILE PHONE WITH CAPACITANCE - The first mobile phone with a capacitive touchscreen was LG Prada , released in May 2007 (which was before the first iPhone released). By 2009, touchscreen-enabled mobile phones were becoming trendy and quickly gaining popularity in both basic and advanced devices. In Quarter-4 2009 for the first time, a majority of smartphones (i.e. not all mobile phones) shipped with touchscreens over non-touch. 2013 RESISTIVE VERSUS PROJECTED CAPACITANCE SALES - In 2007, 93% of touchscreens shipped were resistive and only 4% were projected capacitance. In 2013, 3% of touchscreens shipped were resistive and 96% were projected capacitance (see page 5). 2015 FORCE SENSING TOUCHSCREENS - Until recently, most consumer touchscreens could only sense one point of contact at
3234-411: The screen and a matched phototransistor on the other edge, all mounted in front of a monochrome plasma display panel. This arrangement could sense any fingertip-sized opaque object in close proximity to the screen. 1973 MULTI-TOUCH CAPACITANCE - In 1973, Beck and Stumpe published another article describing their capacitive touchscreen. This indicated that it was capable of multi-touch but this feature
3300-538: The screen to activate a switch (or a U-shaped gesture for a toggle switch). The HCIL team developed and studied small touchscreen keyboards (including a study that showed users could type at 25 wpm on a touchscreen keyboard), aiding their introduction on mobile devices. They also designed and implemented multi-touch gestures such as selecting a range of a line, connecting objects, and a "tap-click" gesture to select while maintaining location with another finger. 1990 TOUCHSCREEN SLIDER AND TOGGLE SWITCHES - HCIL demonstrated
3366-422: The screen with a special stylus or one or more fingers. Some touchscreens use ordinary or specially coated gloves to work, while others may only work using a special stylus or pen. The user can use the touchscreen to react to what is displayed and, if the software allows, to control how it is displayed; for example, zooming to increase the text size. A touchscreen enables the user to interact directly with what
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#17327763834703432-513: The soil and begin the metal transfer to higher levels of the food chain, and eventually reaching humans. Regarding air pollution: long-term or short-term exposure of children to industry-based air pollution can cause several adverse effects, such as cardiovascular diseases , respiratory diseases and even death . Children are also more susceptible to air pollution detriments than adults. Heavy metals such as lead , chromium , cadmium , and arsenic form dust fall particles and are harmful to
3498-521: The time and an input at other times. I/Os are inputs most of the time, but, once every scan, one of the I/Os has to take its turn at being an output, the remaining input I/Os sensing any signals it generates. The I/O lines, therefore, may have to change from input to output, and vice versa, many times a second. This new design won an Electronics Weekly Elektra Award in 2017. 2021 FIRST "INFINITELY WIDE" TOUCHSCREEN PATENT - With standard x/y array touchscreens,
3564-538: The touchscreen, no matter how wide it is. This could be reduced to 1.15 times the height, if opposing diagonal elements intersect at 60 degrees instead of 90 degrees. The elongated touchscreen could be controlled by a single processor, or the distant ends could be controlled totally independently by different processors, linked by a synchronizing processor in the overlapping middle section. The number of unique intersections could be increased by allowing individual sensing elements to run in two opposing directions - as shown in
3630-449: The trend toward acceptance of touchscreens as a user interface component and have begun to integrate touchscreens into the fundamental design of their products. One predecessor of the modern touchscreen includes stylus based systems. 1946 DIRECT LIGHT PEN - A patent was filed by Philco Company for a stylus designed for sports telecasting which, when placed against an intermediate cathode-ray tube (CRT) display would amplify and add to
3696-422: The zoning restrictions for landfills usually take into account the heavy truck traffic that will exert expensive wear on the roads leading to the landfill. As of 2019 , heavy industry emits about 22% of global greenhouse gas emissions : high temperature heat for heavy industry being about 10% of global emissions. The steel industry alone was responsible for 7 to 9% of the global carbon dioxide emissions which
3762-641: Was Sega 's intended successor to the Game Gear , though the device was ultimately shelved and never released due to the expensive cost of touchscreen technology in the early 1990s. 1994 FIRST WIRE BASED PROJECTED CAPACITANCE - Stumpe and Beck's touchscreens (1972/1977 - already cited), used opaque conductive copper tracks that obscured about 50% of the screen (80 micron track / 80 micron space). The advent of projected capacitance in 1984, however, with its improved sensing capability, indicated that most of these tracks could be eliminated. This proved to be so, and led to
3828-569: Was an evolution of LG's popular Chocolate . The LG Prada was announced shortly before Apple CEO Steve Jobs announced the iPhone on 9 January 2007. After the release of the iPhone the head of the LG Mobile Handset R&D Center was quoted saying he believed Apple had stolen the idea from the Prada after it was announced as part of the iF Design Award , where it won a prize in September 2006. The LG KE850 phone featured
3894-694: Was demonstrated on the 16-bit Atari 520ST color computer. It featured a color touchscreen widget-driven interface. The ViewTouch POS software was first shown by its developer, Gene Mosher, at the Atari Computer demonstration area of the Fall COMDEX expo in 1986. 1987 CAPACITANCE TOUCH KEYS - Casio launched the Casio PB-1000 pocket computer with a touchscreen consisting of a 4×4 matrix, resulting in 16 touch areas in its small LCD graphic screen. 1988 SELECT ON "LIFT-OFF" - Touchscreens had
3960-566: Was developed by Eric Johnson, of the Royal Radar Establishment located in Malvern , England, who described his work on capacitive touchscreens in a short article published in 1965 and then more fully—with photographs and diagrams—in an article published in 1967. MID-60s ULTRASONIC CURTAIN - Another precursor of touchscreens, an ultrasonic-curtain-based pointing device in front of a terminal display, had been developed by
4026-488: Was introduced by researchers at the University of Maryland Human–Computer Interaction Lab (HCIL). As users touch the screen, feedback is provided as to what will be selected: users can adjust the position of the finger, and the action takes place only when the finger is lifted off the screen. This allowed the selection of small targets, down to a single pixel on a 640×480 Video Graphics Array (VGA) screen (a standard of that time). 1988 WORLD EXPO - From April to October 1988,
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#17327763834704092-639: Was later resolved by using finer (10 micron diameter), dark coated wires. Throughout the following decade JPM continued to use touchscreens for many other games such as "Cluedo" and "Who wants to be a Millionaire". 1998 PROJECTED CAPACITANCE LICENSES - This technology was licensed four years later to Romag Glass Products - later to become Zytronic Displays, and Visual Planet in 2003 (see page 4). 2004 MOBILE MULTI-TOUCH PROJECTED CAPACITANCE PATENT - Apple patents its multi-touch capacitive touchscreen for mobile devices. 2004 VIDEO GAMES WITH TOUCHSCREENS - Touchscreens were not be popularly used for video games until
4158-590: Was purposely inhibited, presumably as this was not considered useful at the time ("A...variable...called BUT changes value from zero to five when a button is touched. The touching of other buttons would give other non-zero values of BUT but this is protected against by software" (Page 6, section 2.6). "Actual contact between a finger and the capacitor is prevented by a thin sheet of plastic" (Page 3, section 2.3). At that time Projected capacitance had not yet been invented. 1977 RESISTIVE - An American company, Elographics – in partnership with Siemens – began work on developing
4224-483: Was released for the Sega AI Computer . EARLY 80s EVALUATION FOR AIRCRAFT - Touch-sensitive control-display units (CDUs) were evaluated for commercial aircraft flight decks in the early 1980s. Initial research showed that a touch interface would reduce pilot workload as the crew could then select waypoints, functions and actions, rather than be "head down" typing latitudes, longitudes, and waypoint codes on
4290-533: Was that the Boie technology would become available to us in the near future. Around 1990 I took a group from Xerox to see this technology it [sic] since I felt that it would be appropriate for the user interface of our large document processors. This did not work out". UP TO 1984 CAPACITANCE - Although, as cited earlier, Johnson is credited with developing the first finger operated capacitive and resistive touchscreens in 1965, these worked by directly touching wires across
4356-412: Was the first machine to use touch screen technology instead of buttons (see Quiz machine / History). It used a 14 inch version of this newly invented wire based projected capacitance touchscreen and had 64 sensing areas - the wiring pattern being similar to that shown in the lower diagram. The zig-zag pattern was introduced to minimize visual reflections and prevent Moire interference between the wires and
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