8位定时器H1(PWM 输出)

430 149的PDF，是一片基本的430单片机，价格便宜，适用于初学者-430 149 of PDF, is a basic single-chip microcomputer 430, cheap, applicable to beginners

利用89c51和8253可以测速，经初步测试可以通过-89c51 and 8253 can use guns, as a preliminary test can be

控制步进电机正转，如：p3.2正转,p3.3反转,p3.4停止 步进电机接p1.0p1.1p1.2p1.3，正转，反转各3圈，正反快慢功能，是步进机的经典程序。-Stepper motor control is transferred, such as: p3.2 is transferred, p3.3 inversion, p3.4 stop stepper motor then p1.0p1.1p1.2p1.3, is turn, reversal of the 3 lap, both positive and negative speed function, is a classic step process machine.

PC机与单片机串口通讯可以通过多种方式来实现，在这里只介绍使用MSCOMM控件进行通讯。-PC and microcontroller serial communications to be many ways to achieve here in only MSCOMM controls on the use of communication.

AVR Doper 简化的M8做的USB接口 的STK500V2-AVR Doper do M8 simplified USB interface STK500V2

简易数字电压表的设计,利用单片机AT89S51与ADC0809设计一个数字电压表，能够测量0－5V之间的直流电压值，四位数码显示，但要求使用的元器件数目最少。-Simple digital voltage meter design, the use of single-chip AT89S51 with ADC0809 to design a digital voltage meter, capable of measuring between 0-5V DC voltage value, four digital display, but requires the use of minimum number of components.

单片机上支持SD卡。SPI方式通讯，速度几十K-Single-chip support for SD cards. SPI communication, the speed of dozens of K

FM1702芯片开发板源码采用AT89C52单片机控制射频芯片1702可以用在水表电表等上面-FM1702 chip development board source control using AT89C52 1702 RF chip can use the meter to a meter above etc.

51单片机5045看门狗芯片的代码（通过编程）-51 Single-chip watchdog chip code 5045 (through programming)

51系列单片机读卡程序，本人亲测，适合考勤、门禁。-51 Series single-chip reader program, I pro-test for time and attendance, access control.