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stc12c5a60s_spi直接驱动st7920(12864) 串口驱动、只用个IO口(stc12c5a60s_spi direct drive st7920 (12864) serial driver, only with a IO port)

4X4点阵键盘+1602液晶显示做的计算器（AVR单片机）(4X4 matrix keyboard 1602 LCD calculator to do (AVR microcontroller))

诺基亚5110的驱动程序，主要用于单片机的开发，充当显示模块。(Nokia 5110 driver, mainly for single-chip development, act as a display module.)

气体传感器采样与无线数据传输并发送至电脑 cc2530,多通道数据传输，IAR版本为8.1(Gas sensor sampling and wireless data transmission and sent to the computer cc2530, multi-channel data transmission, IAR version 8.1)

实现数码管0-7的静态显示，采用c语言编写。(play led)

说明：  简单的流水灯控制和外部中断程序和键盘指针的应用(Simple light control and external interrupt water program and the application of the keyboard pointer)

Tic Tac Toe Game Or X O Game is a traditional game requires you to assemble 3 X s or O s in vertical , horizontal way

菜单编程操作的源代码，有助于对菜单的理解。。(Menu programming operation of the source code, contribute to the understanding of the menu. .)

对RC500卡的读和写，假如刷卡正确的话模块上的LED灯就会亮，没有卡、卡不对、或是其他的不能识别的都不能通过(RC500 card to read and write, if correct module on the card will be light, LED lamp without card and card wrong, or other cannot identify cannot pass)

PIC18F2550 sorts of applications made ​ ​ with this beautiful project with 3 source code has comes up all the computer software and computer-related pic assembly software is written in Visual Basic 6