Introduction - If you have any usage issues, please Google them yourself
This design USES the microcontroller STC89C52 as the core device to design a stopwatch, system practical, simple operation. Stopwatch by a four digital tube to display the time together, a total of Yin, show time is 00.00 ~ 99.99 seconds, automatically add 1 per second. A function of start/stop button, another button reset functions. The start of the timer, press the start/stop button and then press the start/pause button is suspended, display the current time the number of seconds, press the reset button is reset, the display value of 00.00.