TQFP-44-LQFP-44-package-library

一个nokia5110液晶的显示程序，用于51单片机，能方便的控制显示内容以及位置。(A nokia5110 LCD display program for 51, can easily control the display content, and location.)

stm32f207串口发送和接收，以及接收中断(stm32f207 usart transmit, receive and receive interrupt)

超声波测距，在51单片机内核下的超声波测距程序，比较精简，希望大家受用。(Ultrasonic ranging, in 51 single kernel of ultrasonic distance measurement procedures, more streamlining, I hope everyone is good enough.)

数码管闪烁显示0~9，便于初学者理解数码管显示原理，很经典~(Digital tube twinkle show 0 ~ 9, facilitate beginners understand digital pipe display principle, it was a classic ~ )

说明：  基于STM32的Hart程序,,4_20电流的HART通讯协议程序。(Hart program based on STM32, 4_ HART communication protocol program for 20 current.)

说明：  51单片机双机通信程序，keil环境。。。。。(51 keil communication between two machine)

初学pic mcu c设计，程序功能 按键控制无刷电机(novice pic mcu c design, function keys control of brushless motors)

Realtek最新的5口傻瓜交换机芯片RTL8305NB做的3口百兆交换机原理图、PCB图，以此为参考可以做5口交换机(Schematic and PCB Documents of 3 Ports switch.The main chip is RTL8305NB,which is the new 5 ports switch chip of realtek Co.Ltd.)

本资料是用来开发ADS1118的中文手册资料， 可以用此写stm32程序(The DATE Is FOR THE ads1118 for the stm32)

说明：  该程序为大家提供定时器程序例程。给大家一个参考，来实现简单的定时功能(This program provides you with timer routines. Give you a reference to achieve a simple timing function)