本秒表计时器用于体育竞赛及各种要求有较精确时的各领域。此计时器是用一块专用的芯片，用VHDL语言描述的。它除开关、时钟和显示功能以外，它还包括1/100s计时器所有的控制和定时功能，其体积小，携带方便。-the stopwatch timer for the various sports competitions and requires more accurate at the various fields. This timer is a dedicated chip, using the

本文档是关于精确定时的文章，可以完成毫秒级精度的计时和控制；对基本流程进行了简单的介绍。-This document is an article about precision timing, you can complete the millisecond timing accuracy and control of basic flow for a simple introduction.

用ACE做的计时器。粗计时，就是不是很精确的-ACE to do with the timer. Rough time, that is not very accurate. . . .

ds1302例题，可实现精确计时；在单片机上已经调试正确；-ds1302

本秒表计时器用于体育竞赛及各种要求有较精确时的各领域。此计时器是用一块专用的芯片，用VHDL语言描述的。它除开关、时钟和显示功能以外，它还包括1/100s计时器所有的控制和定时功能，其体积小，携带方便。(The stopwatch timer is used in sports competitions and in various fields where requirements are more accurate. This timer is written in a VHDL langu