读取DS1302的时间并显示，可通过按键加减对应的时间与日期-DS1302 time to read and display, by pressing a button corresponding to the time and date of addition and subtraction

万年历程序，有按键的 DS1302+1602+AT89C51-wnl cx

万年历时钟控制程序，带有FLASH、蜂鸣器、按键、自定义闹钟图片等功能-whole year clock

基于51单片机的一个计时测温系统：LCD显示屏上显示时间年月日和当前时刻，并显示出所处环境的温度。可通过按键调整时间。(A timing and temperature measurement system based on 51 microcontroller: LCD display on display time, month and day and the current moment, and show the temperature of the environment. You c