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`Touch-Screen Technologies
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`Dr. Sam Hurst the founder of Elographics (left) with the Elotouch
`History of the Touch-Screen
`The first touch screen was the Elotouch that was created by Sam Hurst
`in 1971 with nine friends who were physicists, chemists, engineers,
`draftsmen, administrators, and carpenters. It was made to transform
`graphics to data and were originally started as a basement business.
` They were built in three different basements, one built the sensors, one
`built the hardware, and one built the electronics. The first patent was in
`1971 that was exclusive to Elographics (the company Sam Hurst
`created). The accutouch that was made by Elographics was the first
`transparent touch screen and it was a 5-wire resistive technology and
`was made in 1974. It is the most popular kind of touch screen
`today.today.
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`http://compsci02.snc.edu/cs225/2010/touchScreen/history--evolution.html
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`8/1/2015
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`History & Evolution - Touch-Screen Technologies
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`Page 2 of 2
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`Original Patents
`The following patent applied to the Elotouch.
`US3662105: Electrical Sensor Of Plane Coordinates
`Inventor(s)
`Hurst; George S. , Lexington, KY
`Parks; James E. , Lexington, KY
`Issued/Filed Dates:May 9, 1972 / May 21, 1970
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`The following patent applied to the Accutouch.
`US3798370: Electrographic Sensor For Determining Planar Coordinates
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`Inventor(s)
`Hurst; George S. , Oak Ridge, TN
`Issued/Filed Dates:March 19, 1974 / April 17, 1972
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`Evolution of the Touch-Screen
`The evolution was stagnant until they were used in consumer products
`(e.g. phones). They expanded from monitors to tables and suspended
`glass which use projection and infrared. The technology only grew
`within the last three years where there was a better understanding of
`technology.
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`http://compsci02.snc.edu/cs225/2010/touchScreen/history--evolution.html
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`8/1/2015
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