crc 51 单片机计算程序，保证51利用串口通讯的可靠传输

4*4按键扫描控制数码管显示 通过不同按键控制数码管的显示-4* 4 key scan control LED display

SD卡的驱 动资料，讲述了SD卡的SPI驱动模式-SD Card Driver information about the SD card SPI-driven model

基于Keil C平台的C程序源码，适用于AT89ls52，此程序用于检查7279键盘led专用控制芯片好坏的检测程序，具体内容可参见源码注释-Keil C platform based on C program source code, apply to AT89ls52, this procedure used to check the 7279 keyboard controller chip dedicated led mixed detection procedures, the specific content of the Notes can be found in source

51单片机矩阵键盘的设计与调试，建议使用52单片机。-51 Single-chip design of the keyboard matrix and debugging, it is recommended to use single-chip microcomputer 52.

usb程序 硬件用的是isp1518，传输方式dma-usb hardware procedure is used isp1518, transmission dma

液晶显示控制器T6963C与单片机的接口及编程-T6963C LCD controller and microcontroller interface and programming

华为、上海贝尔、台湾神达电脑的电路板PCB布线的规范，对跨入电路板硬件设计领域是一个捷径，养成良好的布局布线习惯将受益无穷啊，三家公司的布线规范供你参考-Huawei, Shanghai Bell, Taiwan Mitac computer circuit board PCB routing rules, on the threshold of the circuit board hardware design area is a shortcut, to develop good habits will benefit from placement and routing infinite ah, the three companies wiring specification for your reference

这个程序是用TI的单片机MSP430实现的PWM波形的输出。-This procedure is the realization of TI s MSP430 microcontroller PWM output waveform.

A/D转换，转换结果用液晶显示出来，液晶是OCMJX12864。显示的结果是数字量。使用的是ADC0809。（有原理图）-A/D conversion, conversion results liquid crystal display, LCD is OCMJX12864. The result is digital displays. Are using the ADC0809. (With schematic diagram)

430做的一种门控系统的程序，用到变频器，482通信协议等-430 to do a door control system of procedures, using inverter 482, such as communication protocols