c code at89s52 led design

周立功试验板DP51+程序-weeks meritorious test procedures plate DP51

使用89S52为核心做的USB键盘,注意修改了一下windows设备描述符以及端点处理等就行了。用了一个4*4的小键盘,有0-9十个数字键, Num Lock键,Caps Lock键,Shift键,Ctrl键,Alt键,回车键等。 最多可以有三个键同时按下，如果相交的话，最多只能两个键按下-89S52 use as the core of the USB keyboard to do, pay attention to modify the look and the windows device descriptor, such as treatment endpoint on the list. Used a 4* 4 small keyboard, has the number keys 0-9 10, Num Lock keys, Caps Lock key, Shift key, Ctrl key, Alt key, enter key and so on. Can have up to three keys pressed at the same time, if the intersection, then a maximum of only two keys pressed

这是arm92440的脉宽调制（pwm） 适合初学者使用-Arm92440 This is the pulse width modulation (pwm) Suitable for beginners to use

C8051F52xA_53xA型单片机看门狗驱动源代码-C8051F52xA_53xA-based single-chip watchdog driver source code

桦宣430研讨会资料盘里的430源码资料-Cheng Xuan seminar information set 430 in the 430-source information

实现一个简单的电子钟的功能，可是显示时、份、秒，还能置位，恢复默认设置！是初学者的好帮手！-The realization of a simple function of the electronic bell, but displayed, were seconds, but also home, and to restore the default settings! Is a good helper for beginners!

按键扫描驱动程序。51单片机。c语言编程。-button scanning driver. MCU 51. C programming language.

液晶显示的单片机源程序，完成12864液晶(ST790)的驱动程序，可以显示任意的ASCII字符和中文字符-Source of single-chip liquid crystal display, LCD 12864 finish (ST790) the driver, you can display an arbitrary ASCII characters and English characters

NRF9E5Chinese 中文手册

使用微芯公司的PIC18F458单片机，用C语言实现两块单片机之间的CAN通讯，包括接收和发送数据。-The use of Microchip