BINAC

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The BINAC (Binary Automatic Computer) was a mainframe computer built by Eckert-Mauchly Computer Corporation in 1949 .

The BINAC was a direct successor to ENIAC , which was built on a binary number system (ENIAC used a decimal system). BINAC was designed by J. Presper Eckert and John Mauchly of Eckert-Mauchly Computer Corporation and built for Northrop Corporation . The computer had two independent processors, CPU , each CPU with 512 data words each , delay line memory based on mercury . The BINAC used around 700 vacuum tubes . The CPU had a clock cycle of approx. 4.35 MHz , which manifested itself in an access time of approx. 10 microseconds . Programs and data were entered using an octal keyboard.

Northrop picked up the BINAC computer in September 1949 and transported it to their branch. Although the BINAC computer passed the acceptance tests carried out at Eckert-Mauchly, the machine never worked properly at Northrop Corporation. The machine with its sensitive vacuum tubes was probably damaged during transport.

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