电脑音源切换控制器（带红外功能） 用AT89C251+CD4016切换控制，可控制四路以上的立体音源输入切换，一路立体声输出,有红外遥控PC功能。

手把手教你学单片机（第2版）实验程序，原书代码，内有部分是我练习时的代码，可以参考。-Taught you how to learn SCM (version 2) protocol, the original letter code, in some code when I practice, you can refer.

万年历代码，在凌阳61单片机调试通过。 万年历代码，在凌阳61单片机调试通过。-Calendar code, in 61 single-chip debugging through Sunplus. Calendar code, in 61 single-chip debugging through Sunplus.

430用IO口模拟SPI读写的驱动程序。包括SPI的字节读写，区块数据的读写等功能-430 IO I used to read and write the simulation SPI driver. SPI including the byte read and write, read and write data blocks, such as functional

一些单片机C程序，希望对初学者有一定作用-Some single-chip C program, and they hope to have a role beginners

英飞凌单片机XC164的protel封装。-Infineon XC164 Singlechip the Protel package.

一个采用C8051F020芯片实现的流量计控制系统源代码，包括了对C8051F020内部AD和DA的编程、共12个LED（采用74HC195)的编码驱动编程等。-A C8051F020 chip using the flowmeter control system source code, including the internal C8051F020 programming AD and DA, a total of 12 LED (using 74HC195) encoding-driven programming.

通过控制步进电机的驱动板来控制步进电机实现阀门流量的恒定，可作为反馈系统的参考-By controlling the stepper motor driver board to control the stepper motor to achieve a constant flow valve can be used as a reference feedback system

离散 PID 控制 设计方法 ATMEL参考设计-PID control design method of discrete reference design ATMEL

电机驱动！四相五线的步进电机用C8051F020驱动-Motor drive!

Microchip Technology Inc. 的HCS300 是一款跳码编码 器，它是专为安防遥控无钥门禁（RKE）系统而设计 的。 HCS300使用KEELOQ跳码技术，并具有安全性高、 封装尺寸小和成本低等特性。 HCS300 是单向遥控无钥 门禁系统和访问控制系统最完美的解决方案。-The HCS300 from Microchip Technology Inc. is a code hopping encoder designed for secure Remote Keyless Entry (RKE) systems. The HCS300 utilizes the KEELOQ code hopping technology, incorporating high security, a small package outline and low cost. The HCS300 is a perfect solution for unidirectional remote keyless entry systems and access control systems.via any external connection. The EEPROM data is pro-grammable but read-protected. 2006 Microchip Technology Inc.