AVR单片机实现SPI通信完整源码,可直接拿过来用了

利用单片机测频率-frequency measurement using SCM

这是一个单片机应用中编写键盘代码时可以对比参考的，PS2接口的键盘对应的按键码，很实用的，有用到得朋友可以看看。-This is a microcontroller application can write code in contrast to the keyboard reference, PS2 keyboard interface, the corresponding key code, very practical and useful to have a friend take a look at.

AVR单片机开发的AT24C02的I2C实验-AT24C02 single-chip AVR development of I2C experiment

cd4094驱动程序，驱动1位共阴极数码管，pic12c508a作为控制器，gp0-gp2分别为data,clk,strobe.-cd4094 drivers, driving a total digital cathode tubes, pic12c508a as controller, gp0-Day for data, clk, strobe.

12864液晶在出厂时其对比度已经调好，所以用户在使用的时候第三管脚可不用接任何东西，本实验板上为了兼容多家12864液晶所以加了液晶对比度调节电位器，若用户使用我们配套的12864液晶可不用管它，液晶的第三管脚悬空就可以。有些液晶功耗比较大，用户在使用的时候可将液晶的第19、20引脚的背光不接，这样字体会很清楚-12864 LCD contrast, when the factory has a good tune, so when users can not access the third pin anything, this experiment in order to compatible with more than 12,864 on-board LCD so the addition of LCD contrast adjustment potentiometer, if users supporting our 12864 can not regardless of LCD, LCD" s third pin can be left vacant. Some relatively large power consumption of LCD, users can be used when the first 19,20 LCD backlight will not receive the pin, so that fonts will be very clear

PIC单片机的定时器使用的demo程序.内附说明.-PIC MCU timer used demo program. Containing a note.

单片机程序源代码 AD转换 串口通讯 定时器配置 端口配置 延时 I2C通讯 UART串口，KEIL开发环境 -Microcontroller program source code to configure the AD converter serial communication port configuration latency timer I2C communications UART serial port, KEIL Development Environment

本文件为atmel公司的at45db芯片的驱动程序实例,对于串行flash编程有帮助-this document for the at45db ATMEL chips Driver example, serial flash programming for help

按键控制发光二极管熄灭，基于凌阳单片机开发 -Button control LED is off, Sunplus based on single-chip development

ads7843是一款4线电阻式触摸芯片，可以制成触摸屏，经调试绝对好用！-ads7843 is a four-lane chip resistor touch, touch screen can be made, absolutely useful debugging!