this is resouse of gps reciever.

用protues简单制作的4X4键盘,有图和原程序,可实现按下键显示对应的数值-Protues produced using a simple 4X4 keyboard, there are maps and the original procedure, can be pressed to display the corresponding numerical

单片机控制键盘和led，键盘送入的数据在led 上显示，数据满四位后，键入的第5位数据在个位显示，前四位清零。-MCU control the keyboard and led, keyboard into the data led the show, data-4, Type the first five places in the data revealed that four former reset.

RT12864-3M液晶图片显示程序，汇编编写的-RT12864-3M LCD picture display program, a compilation prepared by

51单片机串口通信汇编语言源代码，发送端和接收端的-51 Single-chip serial communication assembly language source code, the sending end and receiving end

红外传输程序，单片机at90s8515,红外编解码芯片max31-communicate by infraed ray

通过AD0809将输入的模拟量转化为数字量， 通过调节电位器来改变模拟电压输入，通过数码管显示电压的变化-Through the AD0809 analog input into digital, By adjusting the potentiometer to change the analog voltage input, digital display voltage changes

单片机C程序设计及应用实例的例子-SCM C program design and application examples

用ATmega8单片机产生占空比可变PWM方波-ATmega8 generated by single-chip PWM variable duty cycle square wave

是一个5615芯片的驱动程序，5615是一个8位的D/A芯片，用它与51单片机组成的控制系统具有结构简单，性能稳定的特点。-5615 is a chip of the driver, is a 5615 eight of the D/A chips, and use it 51 MCU control system is simple in structure, performance and stability characteristics.

LM128*64液晶驱动程序，有显示图形，汉字，画线等功能 -LM128* 64 LCD driver, has display graphics, characters, painting lines and other functions