c8051f020的pca频率输出，针对c8051f020的实验系统

具体的硬件结构,大家可以看 WS 系列产品的原理图 * 利用AT89S51单片机来制作一个手动计数器，在AT89S51单片机的P3.3管脚接一个轻触开关， * 作为手动计数的按钮. 数码管驱动采用动态扫描方式用单片机的P0.0－P0.7驱动数码管的段码， * P1.3 控制个位数码管的共阳极公共端，P1.2 控制十位数码管的共阳极公共端 * 通过按一下P3.3按键,数码管做 1 的累加, 实现00~99的计数功能,当计到99时又从00开始. * 大家可自行修改程序,扩展到0000~9999的计数范围-Specific hardware architecture, we can look WS schematic family of products using AT89S51* Single-chip to produce a manual counter, in the P3.3 pin MCU AT89S51 by one touch switch,* as a manual count of button. nixie tube driven by dynamic scanning with MCU P0.0-P0.7 driver code segment digital tube,* P1.3 control bit digital tube anode of a total public client, P1.2 control of 10 digital total anode tube through public client* P3.3 click buttons, a digital pipe to do one of the cumulative, realize 00 ~ 99 count function, when the total to 99 from 00 the beginning of time.* everyone can modify the program, extended to 0000 range of ~ 9999 count

usb-isp,直接用usb对avr单片机编程,简单易用-usb-isp, the direct use of usb for avr Microcontroller Programmer, easy-to-use

nrf24e1的有关UART的驱动程序，与电脑上的串口辅助调试工具配合使用-nRF24E1 relevant UART driver, and computer-assisted debugging tools for serial port used in conjunction

LPC900 FLASH单片机--红外多机通信应用实例-Single-chip LPC900 FLASH- infrared multi-machine communication applications

x5045相关程序，用keil c,其中附有两份很实用的资料-X5045-related procedures, using keil c, one with two very useful information

16*16点阵LED测试代码，为个人编写，主要用来测试点阵屏的好坏。-16*16 LED DOT display test

STC89C51是一种性价比很高的芯片,本篇文章提供了很详细的说明,对单片机开发着很有用.-STC89C51 is a highly cost-effective chip, this report provides a very detailed description, right MCU Development to be useful.

51单片机C语言编写的LCD1602的驱动程序，可以显示图形-51 Single-chip C language LCD1602 driver, you can display graphics

使用1520控制器的12232点阵液晶模块的51单片机控制C代码,keil编译通过,使用端口直接连接方法,P1口为数据口,控制线在P3部分端口-1520 controller using dot matrix LCD module 12232 51 C MCU control code keil compiled by the use of ports directly connected, I P1 for data export, the line of control in some ports P3

基于51最小系统的LCD显示程序,包括电路图,源程序-51 based on the smallest system LCD display program, including schematics, source code