Early Microprocessor Revisionist History: Four-Phase Systems AL1

Moore’s Law In Pictures: An Illustrated History of the Microprocessor
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Early Microprocessor Revisionist History: Four-Phase Systems AL1

Similarly, Four-Phase Systems designed an 8-bit chip in 1969 called the AL1 that was used (in triplicate) as part of a 9-chip 24-bit CPU. The AL1 was not called a microprocessor in 1969, but it was later called one in a courtroom demonstration in the 1990s when TI was trying to assert its patents.


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