Accumulator (computing)
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In a computer's central processing unit, the accumulator is a register in which intermediate arithmetic logic unit results are stored.
Walther WSR-16 mechanical calculator. The row of digit-wheels in the carriage (at the front), is the Accumulator.
Front panel of an IBM 701 computer with lights displaying the accumulator and other registers
PDP-8
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The PDP-8 is a family of 12-bit minicomputers that was produced by Digital Equipment Corporation. Launched in 1965, it was the first minicomputer to sell for under $20,000, and the $25,000 mark for a
Accumulator (computing)
…The GE-600_series was a one-accumulator machine, notable for having eight powerful tagged address registers for accessing a second operand. The 12-bit PDP-8 was one of the first minicomputers to use accumulators, and inspired many later machines. The PDP-8 had but one accumulator. The HP 2100 and Data General…
A PDP-8 on display at The National Museum of Computing in Bletchley, England. This example is from the first generation of PDP-8s, built with discrete transistors and later known as the Straight 8.
An open PDP-8/E with its logic modules behind the front panel and one dual TU56 DECtape drive at the top
A "Straight-8" running at the Stuttgart Computer Museum
PDP-8/e at the Living Computers Museum