| 摘要 |
<p>A microcomputer comprises a central processing unit, an internal data bus coupled to the central unit, a read-write memory having a plurality of memory locations and adapted such that data can be both read from and written into a memory location designated by an address given by the central processing unit, a register directly coupled to the memory and controlled by the central processing unit for holding the data read out of the memory without transferring the read out data to the internal data bus, and a read/write circuit connected between the register, the internal data bus and the memory and controlled by the central processing unit for transferring the data held in the register to the internal data bus and then to the memory from the internal data bus. </p> |
