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PDP-8

PDP-8

In 1965 Digital Equipment Corporation (DEC)  Introduced PDP-8, and sold more than 50,000 systems. It was a very low cost computer and its availability in large volume of units made new people accessible for their use. PDP-8 had only eight instructions and two registers (a 12 bit accumulator, AC, and a carry bit called the "link register", L). It used magnetic core memory with a cycle time of 1.5µs , so that a typical two cycle (fetch, execute) memory reference instruction ran at a speed of 0.333 MIPS.







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