rectangles

该程序为大家提供按键扫描程序例程。给大家一个参考，来实现简单的按键扫描功能(This program provides you with the routine of key scan program. To give you a reference, to achieve a simple key scan function)

MCF52255核心开发资料，一些简单的寄存器操作，能够完成一些比较简单的功能。(MCF52255 core development information, some simple register operations, able to complete some of the more simple functions.)

这是本人最近几年所编写的串行通讯的代码集，可以供大家参考学习。(recent years prepared by the serial communication code sets, we can reference for learning.)

RS232-RS422隔离模块电路图,隔离电压为3000V(RS232 AND RS422 communication adaptor,isolated)

Rtthread STM32F407 spi_flash/SDIO_SD/tft_gui移植(Rtthread STM32F407 spi_flash/SDIO_SD/tft_gui transplant)

矩阵按键测试程序, 输出结果用串口传输到上位机显示(Matrix key test program, the output with serial transmission to the PC)

说明：  基于stm32f103读取温度数值,DHT11通过液晶显示读取温度(I am very happy to provide you with this information. I wish you success in your studies)

51单片机实现简易函数信号发生器功能（正弦波、方波、三角波）(51MCU，sin ，pluse，and so on)

Using a servo motor and an ultrasonic sensor is a nod to the robot dog

高档AVR单片机Atmega8535中文资料，适合单片机初学者和开发者作参考资料。(upmarket AVR Atmega8535 Chinese data, MCU for beginners and developers for reference.)