《生日快乐》mcu音乐程序，asm， 单片机也能发声了

在做项目（工程）的时候，我们经常要用到比较多的按键，而且IO 资源紧张， 于是我们就想方设法地在别的模块中节省IO 口，好不容易挤出一两个IO 口，却 发现仍然不够用，实在没办法了就添加一个IC 来扫键。一个IC 虽然价格不高， 但对于大批量生产而且产品利润低的厂家来说，这是一笔不菲的开支! 那，我们能不能想到比较好的扫键方法：用最少的IO 口，扫最多的键？可以吗？-Doing the project (engineering), we often use the relatively large number of keys, and the IO resource constraints, so we are trying to save in another module IO ports, finally out of one or two IO ports, only to find is still not enough there is really no other way to add an IC to sweep on the keys. Although the price of an IC is not high, but low profits, high-volume production and product manufacturers, this is spending a lot of money! That, we can not think of a better scan key method: with a minimum of IO ports, scan Most of the keys? OK?

320*240液晶 用SEED1335控制的驱动-320* 240 LCD driver control with SEED1335

绝对好用的I2C和USBSWITCHTO232 绝对好用的I2C和USBSWITCHTO232-absolutely handy USBSWITCHTO232 I2C and the absolute ease of use of I2C and USBS WITCHTO232 absolutely handy I2C and USBSWITCHTO232

MT8880单片机控制的测试程序-MT8880 SCM control testing procedures

CAN的调试程序。CAN的初始化重要包括下面几个方面。RXB0SIDH，RXB0SIDL，RXB0MIDH，RXB0MIDL。这是接收过滤器。TXB0SIDH，TXB0SIDL，TXB0DLC，这是发送标志位。还有波特率寄存器。操作模式为 正常模式。-CAN debugging procedures. CAN initialization important aspects include the following. RXB0SIDH, RXB0SIDL, RXB0MIDH, RXB0MIDL. This is the receiver filters. TXB0SIDH, TXB0SIDL, TXB0DLC, it is sending signs spaces. There baud rate register. The normal mode of operation for the model.

基于51单片机实现UART通信 SPI通信 和IIC通信 -Based on 51 single-chip UART communication realize SPI and IIC communications communications

基于51系列单片机的DS18B20测量温度系统. 正在学习单片机-MCU DS18B20 temperature measurement system. SCM is learning

51单片机简单操作系统源码，其他地方下的，可能拿来分析分析，学习学习-51 microcontroller simple operating system source code, under other parts of the analysis may be used to analyze, study learning

12864LCD(带汉字库)显示遥控键值读取器 * * LCD型号：TS12864A-3（带汉字库）或兼容型号 控制器ST7920 * * MCU:AT89S52 ,晶体频率：11.0592MHz * * P0口为128*64LCD的数据 D0-D7 * * K17键按下，继电器吸合。K19键按下，继电器关闭 * * 显示程序在中断服务程序之中-12864LCD (with汉字库) shows the remote control key reader** LCD Model: TS12864A-3 (with汉字库) or compatible controller Model ST7920** MCU: AT89S52, crystal frequency: 11.0592MHz** P0 population is 128* 64LCD data D0-D7** K17 button pressed, the relay pull-in. K19 button pressed, the relay to close** display program in the interrupt service routine of

msp430的IIC地层驱动程序，直接应用，欢迎下栽-MSP430 formation of IIC driver, direct applications, welcome下栽