微处理器的任务是去内存中取指令数据,然后分解指令并对指定的操作数进行处理,其能力取决于指令集的操作能力和指令的位长度。从指令组织上划分,微处理器可分为CISC和RISC架构。愈见风行的手持装置因算术逻辑运算要求比PC低,复杂程度也较小,一般多采用RISC架构的微处理器。RISC The microprocessor’s task is to fetch instruction data in memory and then disassemble the instruction and process the specified operand. The ability of the microprocessor depends on the operation capability of the instruction set and the bit length of the instruction. Divided from the command organization, the microprocessor can be divided into CISC and RISC architecture. Increasingly popular handheld devices due to arithmetic logic requirements than PC low complexity is also smaller, the general use of RISC microprocessor architecture. RISC