Through controlling an N-bitaccumulator and then get its highest bit to generate the programmable clock.
通过控制一个N位累加器累加，取其最高位，即可得到可编程时钟源。
2
This moves the carry into bit position of the accumulator.
把进位移到累加器的位元。
3
It has been found that the major limitations of typical 8-bit MCU are the ALU structure based on accumulator and the CISC architecture adopted in MCS-51 design.