8051的汇编指令速查表，搞51单片机汇编的朋友必备。-Fact Sheet 8051 compilation of instruction, research compiled a friend microcontroller essential.

51单片机的定点和浮点运算子程序以及特殊功能寄存器和汇编指令的详细列表-51 single-chip fixed-point and floating-point operations subroutine, and a detailed list of the special function registers and assembly instructions