1．　　能显示系统当前时间，显示到秒级，并随时间刷新。 显示可采用七段电子表方式也可采用钟表方式，最好可在两种显示方法间进行切换-1. The current system can show that the time to the second-class show, and with time set. Paragraph 107 indicates use of electronic forms are also available clocks, the best show in two ways switching between