一个简单的计算器，用51单片机做的，用到矩阵键盘，四位数码管。在keil下编译生成HEX文件，附上在proteus中的仿真文件。-A simple calculator, to do with the 51 single-chip, used in the matrix keyboard, four LEDs. In keil compiler generated HEX file, attached to the simulation in proteus file.

2位数加法运算，遥控计算器，LCD1602显示，编译环境keil4-2 digit addition operation, remote control computer, LCD1602 display, the compiler environment keil4

基于PIC18单片机 PICC编译器实现计算器功能-PIC18 microcontroller based calculator function to achieve PICC compiler

基于flex和bison的终端计算器代码，如果想要初步编译产生的.c代码能在VC环境下编译的话，请在.l文件的开始加上 option yywrap-Terminal based on flex and bison calculator code, if you want to produce a preliminary compilation. C code in VC environment compiler, please. L beginning of the file plus opt