时钟是人们日常生活必不可少的一种产品，电子时钟因为其价格低廉、操作方便等优点深受消费者喜爱。本设计将以单片机为核心设计几种电子时钟的设计方案，这些方案中有的可以将其嵌入其他电子产品中，有的则适合单独作为时钟产品，有的时间准确，有的则时间粗略。能够满足不同场合、不同需要的情形。-Clock is essential for people' s daily life of a product, the electronic clock because of its low price, easy operation by consumers. This design will be the microcontroller as the core design of several electronic clock design, some of these programs can be embedded in other electronic products, while others are suitable for the individual products as a clock, and some time accurately, some rough times. Able to meet different occasions and different needs situation.