在乘法和除法运算中，用作累加器扩充的一种寄存器。
A register used as an extension of the accumulator during multiply and divide processes.
全部指令执行时都用了称作累加器的寄存器。
All instructions are carried out using a register called the accumulator which we shall denote by a.
全部指令执行时都用了称作累加器的寄存器。
All instructions are carried out using a register called the accumulator which we shall denote by a.
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