基于单片机的上网计时系统的设计

System of Internet Timing Based on Microcontroller

本文设计了一个用AT89S51实现手动控制的上网计时系统,这套系统由单片机作为核心部件,只需在pc机上网和断网时按下计时开关,计时器系统即开始自动计时,并可以累计本月上网总时长,还可以同时显示本次上网时长和累计上网时长。此外,本系统还可以设定上网报警时间,当超出设定值时,系统会发出报警提示。通过单片机的自动控制,解除了用户重复费时的手工劳动,而且本设计的计时系统成本低廉,运行稳定,有很大的实际应用价值。

A internet timing system is designed and it can be manually controlled using AT89S51 in the paper. The system makes the microcontroller as a core part. It only need to press the switch when the pc link or disable the internet, then the timer starts accounting automatically, and add the whole time that pc on-line in every month. The timer could display the times that pc on-line this time and the total time at the meantime. Moreover, the timer can set the alarming time. When the total time is equal to the alarming time in this month, the system will send an alert signal to you. By the automatic control of microcontroller, customers can relieve the repeating and time-consuming manual labor, and the cost of the design is cheap and it runs stable, there is great practical applied value.