8９Ｓ51的程序，实现秒表功能秒表C51程序，包含键盘扫描，在数码管上显示各个数字，使用80C51单片机 -89S51 procedures to achieve stopwatch function stopwatch C51 procedures, keyboard scanning, digital control in the various figures show that the use of 80C51 microcon

8９Ｓ51的程序，实现秒表功能秒表C51程序，包含键盘扫描，在数码管上显示各个数字，使用80C51单片机 -89S51 procedures to achieve stopwatch function stopwatch C51 procedures, keyboard scanning, digital control in the various figures show that the use of 80C51 microcon