关于51单片机DS18B20的驱动程序，编译过，可以直接使用。

铅酸电池充电器，采用78F9202单片机，C语言-Lead-acid battery charger, using 78F9202 Singlechip, C language

关于来电识别的程序-on caller identification procedures

自己用C语言编的一个LCD显示程序，由于刚学单片机，写得功能比较简单-Own use C language compiled an LCD display program, as just learning microcontroller, written in relatively simple function

usb slaver for sd card

本程序主要是16*2小液晶的驱动，可以显示英文字符和数字。-This procedure is 16* 2 small LCD drivers, you can display English characters and numbers.

LCD1602的显示程序，用的是S51单片机，已通过调试。-LCD1602 display program, using a S51 MCU has passed debugging.

PCA捕获功能原程序代码,初学单片机有用,代码已运行过,能用.-PCA capture the original program code, beginner Singlechip useful, the code has been in operation, and can be used.

PICKS0108图形液晶驱动程序C源代码，编译为PICC18

51单片机上对LCD的驱动程序，可以在点阵LCD上显示汉字。-51 MCU driver on the LCD can display Chinese characters on a dot matrix LCD.

在做项目（工程）的时候，我们经常要用到比较多的按键，而且IO 资源紧张， 于是我们就想方设法地在别的模块中节省IO 口，好不容易挤出一两个IO 口，却 发现仍然不够用，实在没办法了就添加一个IC 来扫键。一个IC 虽然价格不高， 但对于大批量生产而且产品利润低的厂家来说，这是一笔不菲的开支! 那，我们能不能想到比较好的扫键方法：用最少的IO 口，扫最多的键？可以吗？-Doing the project (engineering), we often use the relatively large number of keys, and the IO resource constraints, so we are trying to save in another module IO ports, finally out of one or two IO ports, only to find is still not enough there is really no other way to add an IC to sweep on the keys. Although the price of an IC is not high, but low profits, high-volume production and product manufacturers, this is spending a lot of money! That, we can not think of a better scan key method: with a minimum of IO ports, scan Most of the keys? OK?