51系列单片机控制的微打驱动程序

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?

此为AD转换器ADC0809的资料-this AD converter for the ADC0809

C8051F040 ＣＡＮ总线编程，演示时需两块０４０的开发板，开发板的按键状态通过CAN总线发到另一个开发板上并通过ＬＥＤ显示出按键状态．-C8051F040 CAN bus programming, presentation 2 040 when the development board, development board through the state of the keys issued to another CAN bus and through the development of on-board LED shows the status button.

1.Ｋ１作为左转弯开关，Ｋ２作为右转弯开关。Ｌ１、Ｌ２作为左转弯灯，Ｌ５、Ｌ６作为右转弯灯。 2.程序实现的功能：向上打Ｋ１时左转弯灯以一定频率闪烁，打Ｋ２时右转弯灯以一定频率闪烁，Ｋ１、Ｋ２同时向上或向下，发光二极管灭。-1.K1 as a left turn switch, K2 as a switch and turn right. L1, L2 as a left turn lights, L5, L6 as lights and turn right. 2. Program features: K1 when the left turn up to fight a certain frequency of flashing lights, turn right when playing K2 to a certain frequency of flashing lights, K1, K2 upward or downward at the same time, anti-light-emitting diodes.

测试过的240128LCD单片机c51显示程序-Singlechip 240128LCD tested C51 display program

温度传感器18B20的典型应用，通过18B20采集温度，可以精确到小数点两位，在LED或LCD上显示-Temperature Sensors Typical applications 18B20, 18B20 collected through the temperature, can be accurate to two decimal places, in the LED or LCD display

锯齿波信号发生器 函数信号源采用数字存储方式存储一到几个周期，再用时间计数，循环执行的方法实现函数信号的连续输出 -Sawtooth signal generator function signal source using a digital storage means to store some cycle, then the time counting, the method of implementation cycle of the implementation of the continuous output function signals

c程序，TI TMPS430单片机使用例子，希望对象我一样的初学者有帮助,-c procedures, the use of TI TMPS430 SCM example, I hope that the same object is to help beginners.

全面介绍了高质量PCB设计技巧，共为8章。-A comprehensive introduction to high-quality PCB design techniques, a total of 8 chapters.

USART在单片机里的通用c程序，保证好用-USART in SCM