Lexikon's History of Computing
Early Transistorized Computers
In 1953, the MIT TX-0 computer was built at MIT's Lincoln Labs. It utilized transistors instead of vacuum tubes.
In 1954, the TRADIC computer was developed. The TRADIC was the first universal all transistor computer.
1954 (October) IBM demonstrated an experimental model 604 electronic calculator which used all transistors. The first all-transistor calculator was based on these circuits, later sold as the IBM 608.
By 1955, IBM was making computers utilizing transistors in its computer equipment, and other computer manufacturers did the same.
In 1956 Bell Laboratories introduces the "Leprechaun," its first experimental transistorized computer.
In 1957, NCR built the NCR 304 the first all solid state business computer.
1957, September, the IBM 705 model III was IBM's last large-scale vacuum tube based machine.
In 1958, Control Data Corporation announced its first major computer system, the fully transistorized CDC 1604.
In 1959, IBM announced the 1401, IBM's first mass-produced digital, all-transistorized, affordable business computer.
By the end of 1959, transistorized commercial computers had started to become widely available.
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