说明：  本文介绍了一个多功能电子钟的设计方案。该方案具有计时、整点报时、校时、校分、闹钟等多项功能。此方案基于Altera 公司的 Cyclone 芯片及Quartus II 7.2 软件。整体设计采用自顶向下的设计思想，大量使用了器件模块化操作。本文对于研究数字钟及扩大其应用，有着非常现实的意义。
(This paper describes a multi-clock design. The program has the time, the whole point of time, school hours, school hours, alarm clocks and many other features. This program is based on Altera' s Cyclone chip and Quartus II 7.2 software. The overall design using top-down design, extensive use of modular operation of the device. This digital clock for research and expand its application, has a very practical significance.)