详细讲述单片机中SPI接口以及串行接口的原理和编程方法，很有价值...

lcd application example

非常方便使用的ds1302程序。使用时，只需调用5个函数，即可完成1302的初始化，读写等-Ds1302 is very easy to use program. Use, simply call the 5 function, 1302 to complete the initialization, reading and writing, etc.

按键扫描 51单片机加8279 8279通过74LS 138译码器扩展4×4键盘、6位显示器。 由3-8译码器对SL0～SL2译出键扫描线，由另一3-8译码器译出显示器的位扫描线，并采用了编码扫描方式。 为了防止出现重键现象，扫描输出线高位SL3不参加键扫描译码。CPU对8279的监视采用了查询方式，故8279的中断请求信号IRQ悬空未用。 -Scan button 82,798,279 plus 51 single-chip decoder 74LS 138 through the expansion of 4 × 4 keyboard, the display 6. From 3-8 decoder SL0 ~ SL2 translated to the key scanning line, by another 3-8 decoder translated display scan line, and uses code scanning. In order to prevent the emergence of the phenomenon of re-key, scan the output line does not take part in high level SL3 scan decoding keys. CPU on the 8279 surveillance using the query mode, the 8279 interrupt request signal IRQ left unused.

这个是多机通信的程序，虽然老了点，但是用与实验是很好用的，本人昨天刚去试过啊，呵呵，希望对大家有帮助，嘿嘿 -This a multi-machine communication procedures, although old, but with the experimental use is a good use, and yesterday I just tried to ah, what we want to help, laughter

ds1302 实时时钟程序 对单片机者很有帮助-ds1302 real time clock procedures on SCM were very helpful

非常经典的一个单片机电子钟的word文档，相信你看了以后一定有很大的感触-A very classic one microcontroller electronic clock word document, I believe you read the future, it will have very strong feelings

LIN协议的实现。用状态机实现。baudrate可调整，只能做slave。-SCI communication on 68hc9s08dz60 it is not a simple sending & receiving process, utilizes a state machine

c51MAX232通信子程序-c51MAX232 communications Subroutine

单片机开发的一些典型代码，用C开发的，与大家分享-MCU development of the typical code, the development of the C share with you

热敏电阻，+adc0804测量温度，精确度到0.3摄氏度，本人第一个作品-Thermistor,+ adc0804 temperature measurement accuracy to 0.3 degrees Celsius, I was the first work