A report on PDP-8 and Accumulator (computing)

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.
Walther WSR-16 mechanical calculator. The row of digit-wheels in the carriage (at the front), is the Accumulator.
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.
Front panel of an IBM 701 computer with lights displaying the accumulator and other registers
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.
PDP-8/I core memory stack
One of three inter-connected modules that make up a PDP-8 core memory plane.
One of three inter-connected modules that make up a PDP-8 core memory plane. This is the middle of the three and contains the array of actual ferrite cores.
One of three inter-connected modules that make up a PDP-8 core memory plane.

It also has only three programmer-visible registers: A 12-bit accumulator (AC), a program counter (PC), and a carry flag called the "link register" (L).

- PDP-8

The 12-bit PDP-8 was one of the first minicomputers to use accumulators, and inspired many later machines.

- Accumulator (computing)
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.

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