当前时间送电脑同时显示,用RS232运用串口通信送数据给电脑，开中断计算时间，精确到秒。Keil C51开发环境，是一个整合很多技术的程序。 -current time to send the computer also showed that use RS232 serial data communications sent to the computer, open interrupted computing time, accurate to the second. Keil C51