一个简单的QT秒表模块小程序。。。初学者不错的选择-A simple stopwatch module QT applet. . . A good choice for beginners

基于ARM9的倒计时秒表，用QT绘制界面，倒计时为零LED闪烁，有加减计时，暂停，启动，复位，单片机复位等功能-ARM9-based countdown stopwatch with QT drawing interface, the countdown to zero LED flashes, there is plus or minus timing, pause, start, reset, the microcontroller reset function