CG-24 was a 25-bit parallel machine with an 8K-word core memory driven by transistor circuits. It was the first all-transistor machine. Named for Lincoln Laboratory’s Computer Group 24, the CG-24 had a transistor and diode circuitry, was capable of operation at clock-rates up to 0.5 MHz, and operated with a 0.33 MHz clock.
Perhaps the greatest innovation in the design of the CG-24 was the development of a register-transfer language, which enabled the designers to simulate the logic design of CG-24 before the machine was built; this technique achieved wide acceptance within the computer industry.
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