Model 109
Introduction The '''Model 109''', or '''Number 109''', was a series of mainframe computers designed and built in the People's Republic of China, starting in 1964. *First Model 109, created in 1964, used vacuum tubes*The Model 109-B, China's first transistor computer was created in 1965. *The Model 109-C followed in 1967, and was used for 15 years.Those were followed by the ''Number 111'', their first integrated circuit computer, in 1971.
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