The first KH-11 KENNEN reconnaissance satellite equipped with charge-coupled device array ( 800 x 800 pixels) technology for imaging was launched in December 1976. Steven Sasson, an electrical engineer working for Kodak, invented the first digital still camera using a Fairchild 100 x 100 CCD in 1975. Fairchild's effort, led by ex-Bell researcher Gil Amelio, was the first with commercial devices, and by 1974 had a linear 500-element device and a 2-D 100 x 100 pixel device. Several companies, including Fairchild Semiconductor, RCA and Texas Instruments, picked up on the invention and began development programs. By 1971, Bell researchers led by Michael Tompsett were able to capture images with simple linear devices. This device had input and output circuits and was used to demonstrate its use as a shift register and as a crude eight pixel linear imaging device.Development of the device progressed at a rapid rate. The first working CCD made with integrated circuit technology was a simple 8-bit shift register.
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