题目：电子时钟的设计

一、实验目的：

1．　　掌握多位计数器相连的设计方法。

2．　　掌握十进制、六十进制、二十四进制计数器的设计方法。

3．　　继续巩固多位数码管的驱动及编码。

4．　　掌握扬声器的驱动

5．　　掌握EPLD技术的层次化设计方法



二、实验要求：

1．用时、分、秒计数显示功能，以24小时循环计时。

2．具用清零，调节小时、分钟功能。

3．具用整点报时功能。

-Title: E-clock design, experimental purposes: 1. To master a number of counters connected to the design method. 2. Grasp the metric system, six decimal, hexadecimal 24 counter design. 3. Continue to consolidate a number of digital tube drivers and coding. 4. Grasp the speaker driver 5. EPLD technology to master-level design method II, the experimental requirements: 1. With hours, minutes and seconds count display to a 24-hour cycle time. 2. With a zero, adjust hours, minutes functions. 3. The whole point of using a time function.