反转法键盘头文件,利用反转法键盘有时比用7281控制简单,

数字电压表设计，单片机AT89S51与ADC0809设计，能够测量0－5V之间的直流电压值，四位数码显示。完整的C语言代码和电路图-Digital voltage meter design, microcontroller AT89S51 with ADC0809 design, capable of measuring between 0-5V DC voltage value, four digital display. Complete C language code and circuit diagram

430中149单片机使用的UART的特殊用法，测试通过-430code

51单片机操作89F0X0系列FLASH存储器的程序-51 89F0X0 Series MCU operating procedures FLASH memory

Display a color pallet for color RGB definations

无线模块nrf24l01程序，实现发送与接收功能。-Wireless module nrf24l01 procedures implementation to send and receive functions.

故障指示器；单相接地故障；电流互感器；全波整流有效值电路；单片机-Fault Indicator Single-phase Ground Fault Current Transformer RMS circuit full-wave rectifier SCM

用C语言写的PS2代码，有比较好的通用性，并且在实际项目中用过-Using C language to write code of PS2, has a relatively good general, and used in actual projects

sonix，24系列EEP读写子程序，使用接口函数，可直接调用-sonix, 24 series of EEP read and write subroutines, using the interface functions can directly call the

MCS―51单片机系统扩展 简单的并行接口由数据寄存器和少量的控制电路组成，暂存传送的数据。以锁存器、缓冲器为主要芯片，稍加控制都可以作为简单的并行接口.-MCS-51 single-chip microcomputer system to expand a simple parallel interface from the data register and a small number of control circuit components, temporary storage of data transmission. To latches, buffers as the main chip, a little control can be used as a simple parallel interface.

0-99的计数器，使用AVR128单片机制作，从0开始记数到99自动清0，用数码管显示-err