说明：  1T 8051单片机指令系统分类与执行时间:时下,再按照 12T/指令周期 来考虑 8051 的指令时间,会导致许多失误,这里汇集新品种的 8051 各指令执行时间,方便朋友们参考使用.
(1T 8051 microcontroller instruction classification and execution time: nowadays, then in accordance with the 12T/instruction cycle time instruction to consider the 8051, will lead to many mistakes, where the 8051 collection of new varieties of the instruction execution time, easy to use friends as a reference.)