完整的CRC循环冗余校验码程序，C语言编程

8019中文数据手册，给阅读英文数据手册嫌麻烦的朋友-8019 manual to read English manual data as troublesome friend

频率计是常用的测量仪器，它通过对单位时间内的信号脉冲进行计数，从而测量出信号的频率。设计一个6位频率计，可以测量1～999 999 Hz的信号频率。-Frequency meter is commonly used measuring instruments, which per unit time of the signal pulse count in order to measure the frequency of the signal. 6 to design a frequency counter, can measure 1 ~ 999 999 Hz signal frequency.

用 52 模拟SPI串口接受程序，然后控制无线模块发送出去！饱含nrf2401的初始化！-SPI serial interface with 52 analog acceptance procedure, and then control the wireless module to send out! Full of nrf2401 initialization!

应用背景 stm32超声波测距程序，可用于位移测量，飞行器定高，室内避障，可用于巡线小车追踪目标，C语言编写，简单易懂，方便移植，使用的MCU为stm32f103. 关键技术用超声波测距，使用stm32通过电平触发方式发给TRIG端脉冲，然后通过外部中断方式和定时器精准定时读出模块echo高电平时间，从而算出所测的距离。

FAT16 Microchip Application not for PIC24F

4个按键判断指令防真实验 4个按键判断指令防真实验-4 keys to judge orders anti-truth experiment four keys to judge orders anti-truth experiment

《dsPIC通用数字信号控制器原理及应用》源码 -err

PPP协议C语言源代码，可移植到嵌入式系统上！-It is the C source file of ppp protocol that can be transplanted to embeded systems.

VGA显示的FPGA实现-VGA display FPGA

这个程序是汇编的，里面有很多种类的编码芯片的解码程序，大家看看哦，很有用的！--Assembly programs. It includes decoding programs for various kinds of chips.