我的基于C51的时钟+运算器2合一汇编程序 P1口接4X4键盘阵列，P0口接LCD，没有键盘的也可以运行~有时间显示~ 时间的调整需键盘 -Based on my C51 clock+ Calculator 2 unity assembler P1 I then 4X4 keyboard array, P0 I then LCD, no keyboard can also be run ~ ~ time to time show that the adjustment requir