取消工程密码专用6.51

p1.5脚控制灯。 当灯点亮是，把域值增大。 光传感器通过AD转换。 使用STC12C5404AD调试通过。(P1.5 pin control lights. When the lights lit is to increase the domain value. Optical sensor through the AD conversion. Debugging through the use of STC12C5404AD.)

crc校验程序，采样MEGA32单片机，可以设置为查表或者计算方式(crc check program, sampling MEGA32 microcontroller, can be set to look-up table or formula)

基于51单片机PWM控制LED灯渐亮渐灭实验(Based on 51 MCU PWM control of LED lights getting brighter gradually eliminate experimental)

用LPC2200控制TFT，完成的程序，可以使用(LPC2200 controlled by TFT, the completion of the procedure, you can use)

使用stm32的一路pwm控制RGB灯条的颜色和个数随着音乐跳动。简称音乐喷泉(The color and number of STM32 PWM control RGB lights are beating with music. Music fountain for short)

说明：  基于STM32F103利用SPI协议，RC522多功能读取，修改，删除卡片(Based on STM32F103 and SPI protocol, RC522 can read, modify and delete cards with multiple functions.)

说明：  松翰单片机8脚芯片SN8P2711 ADC工程例程(sn8p2711 chip adc example)

51单片机,步进电机仿真，正转、反转、加速、减速控制(51 single-chip stepper motor simulation, forward, reverse, acceleration, deceleration control)

PIC16F73做的逆变器程序及原理图,k可以根据资料直接做出来小功率逆变器(PIC16F73 do inverter program and schematic, k can be done directly out of the small power inverter according to information)

自己利用ＰＳＣＡＤ搭建的ＭＭＣ三相变换器，包括了电容预充电过程。(The MMC using PSCAD build their own three-phase converter, including a capacitor pre-charging process.)