Sunday, September 02, 2007


In a computer CPU, an accumulator is an inventory in which intermediary arithmetic and logic results are stored. Without a register like an accumulator, it would be essential to write the result of each calculation to main memory, possibly only to be read right back again for use in the next operation. Access to main memory is slower than access to a register like the accumulator because the technology used for the huge main memory is slower than that used for a register.


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