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Accumulator facts for kids

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Early SSA accounting operations
Accumulators on a tabulating machine circa 1936. Each of the four registers can store a 10-digit decimal number.
IBM 701console
Front panel of an IBM 701 computer with lights displaying the accumulator and other registers

The accumulator is register for storing results of operations inside the CPU. Accumulator's name or representation depend upon CPU architecture and manufacturer, for example in intel x86 architecture accumulator's name is AX in 16bits or EAX in 32bits mode. An accumulator is manipulated by machine code or assembly for example assembly code:

"add ax, 3" add 3 in accumulator register.

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