Felker and Harris program TRADIC
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Components
AT&T Bell Laboratories announced the first fully transistorized computer,
TRADIC. It contained nearly 800 transistors instead of vacuum tubes.
Transistors -- completely cold, highly efficient amplifying devices invented at
Bell Labs -- enabled the machine to operate on fewer than 100 watts, or
one-twentieth the power required by comparable vacuum tube computers.
In this photograph, J. H. Felker (left) gives instructions to the TRADIC
computer by means of a plug-in unit while J. R. Harris places numbers into the
machine by flipping simple switches. The computer occupied only 3 cubic feet.
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