文章借助系统模型，阐明了GSM模块收发短信的基本概念以及串口控制SMS的基本原理。详细介绍了单片机控制GSM模块工作的软件实现过程，对对怎样用单片机控制GSM模...

LCD1602在KEIL下调试的DLL。-LCD1602 in KEIL debugging under the DLL.

该程序提供步进马达的制造原理,控制原理.和C51控制标准程序,按此方法就可以作出!-the procedures for the motor manufacturing principles, the principle of control. C51 control standards and procedures, according to method can make!

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?

1602 液晶 字符翻页程序 使用的是新华龙单片机 100脚 的 -1602 characters LCD flip process

cypress的 fx2-Vend_ax-fx2 the cypress-Vend_ax

1602LCD滚动显示程序 很详细的资料，适合初学者-1602LCD rolling display program is very detailed information, suitable for beginners

名称： RS232通信+数码管显示程序 功能：在数码管上显示串口发过来的数字-Name: RS232 communications+ digital tube display program features: in the digital tube display serial number of hair over

蜂鸣器响 改变蜂鸣器的频率，通过改变延时时间 蜂鸣器的时间要是是靠延时来完成的-Buzzer buzzer ring to change the frequency by changing the delay time if the buzzer is the time to be completed by the time delay

aduc843的c程序例子-ADUC843 procedures example of c

pic18f458单片机PWM如何工作的-pic18f458 microcontroller PWM How does it work