说明：  能实现功能有：显示年、月、日、星期、时、分、秒、阴历月日、温度，共21位数码管。其中星期和阴历月日能根据公历自动计算改变，到2050年之前有效。温度可以测量从-10到40℃之间的温度。还可以设定两个定时、12/24小时显示、自动亮暗切换的时间等。 电路只用了两片IC，一片M48，另外一片是74LS145，4-10译码器，来扩充端口。
(Achieve function: display year, month, day, week, hours, minutes, seconds, day lunar month, the temperature, a total of 21 digital tube. On day one week and the lunar calendar calculated automatically according to changes, valid until 2050. Temperature can be measured from-10 to 40 ℃ temperature between. You can also set up two from time to time, 12/24 hour display, automatic light dark switching time. Circuit used for only two IC, one M48, another one is the 74LS145 ,4-10 decoder, to expand the port.)