全国大学生电子设计大赛题目―芯片检测的51单片机源代码，能识别74，74ls系列芯片，检测芯片好坏！...

因需要，单片机的键盘扫描和数码管显示共用一口，用定时器实现，原创-Due to the needs of single-chip microcomputer keyboard scanning and sharing a digital tube display with a timer to achieve the original

SD卡资料大全，在网上找了好久的，供大家开发SD卡查询。-SD card Sourcebook, the Internet looking for a long time, and for all to develop SD card queries.

1602+ds1302时钟显示+ds18b20温度报警，原理图，资料和源码。-1602+ ds1302 clock display+ ds18b20 temperature alarm

用反转法实现快速高效的4*4键盘扫描，并通过串口将按键值输出-Inversion method with fast and efficient implementation of the 4* 4 keyboard scanning, and send out the key value through the serial port

用普单片机实现低成本高精度A_D与D_A转换关键词 单片机 　A/D转换 　D/A转换 　PWM(脉冲宽度调制)比较器-Pu realize low-cost single-chip microcomputer with high-precision conversion A_D with D_A Key words Single-chip A/D converter D/A converter PWM (pulse width modulation) comparator

320240lcd Drive 89系列单片机通用-320240lcd Drive 89 Series Single-chip Universal

ht47r20遥控程序，红外线载波输出频率这系统时钟的12分频，当系统频率为480KHZ，载波频率为40KHZ-ht47r20 remote control procedures, infrared output carrier frequency system clock frequency of 12 minutes, when the system frequency for 480KHZ, carrier frequency 40KHZ

PIC LED 流水灯实验，顺闪，返闪，交替闪-PIC LED

LSB，VC实现 LSB，VC实现-LSB, VC realize LSB, VC realize

ATmega8+315M或433.92M的超再生接收头+1602六线控制的1602显示解到的码-ATmega8+ 315M or 433.92M the超再生receive the first+ 1602 six-lane controlled display solutions to the 1602 Code