说明：  电子信息技术的发展越来越快，电子产品在人们日常生活中的应用越来越普及。时钟是我们日常生活中不可缺少的一部分，本设计主要使用硬件实现电子时钟的计时、校验等功能。本文主要对时钟电路的选择、功能、原理、装配调试和故障分析排除进行阐述。该电子时钟主要从以下六个方面进行设计：脉冲源、整形电路、分频器、计数器、译码器/驱动器和校时电路。
(The development of electronic information technology faster and faster, electronic products in everyday life more and more popular. Clock is indispensable in our daily life as part of the main uses of the hardware design of electronic time clock, checking and other functions. In this paper, the choice of the clock circuit, function, principle, rule out the assembly debugging and failure analysis to elaborate. The electronic clock is mainly designed from the following six aspects: pulse source, shaping circuit, divider, counter, decoder/driver and timing circuits.)