单片机数字时钟，用液晶显示，实现时钟各种功能，加原理图。-Single-chip digital clock with LCD display, clock realize a variety of functions, plus schematics.

基于51单片机的多功能数字时钟(带温度显示\闹铃等)-51 single-chip microcomputer-based multi-functional digital clock (with the temperature display \ alarm, etc.)