xl系列单片机实验仪演示程序 矩阵键盘1602液晶显示计算器 实现加减乘除，清零等功能 0a键+ 0b键- 0c键* 0#键/ 0#键清除-experimental device xl MCU 1602 demo keyboard matrix liquid crystal display calculator to achieve addition, subtraction, clear key functions 0a+ 0b key- 0c key* 0# keys/0# ke

用汇编语言写的51单片机计算器，用数码管显示，16*16矩阵键盘。计算结果可以到8位数。-Written in assembly language microcontroller 51 calculator, with digital display, 16* 16 matrix keyboard. The results can to 8 digits.