这是一个keil c51 程序 采用8031单片机，是一个学习keil c 的入门级程序...

蜂鸣器响 改变蜂鸣器的频率，通过改变延时时间 蜂鸣器的时间要是是靠延时来完成的-Buzzer buzzer ring to change the frequency by changing the delay time if the buzzer is the time to be completed by the time delay

此模块是我在以前公司做热风枪项目时设计的一个模块，用于实时显示当前温度，其精度可以达到1摄氏度，三位半液晶显示，界面美观，稍作改动也可用段码LED作为显示。 程序功能：10位A/D的温度采集（热电偶）；TN段码液晶驱动；温度补偿； 文件包括：所有C源程序；完整的项目文件包（基于MCU：HT46R23） PCB HT46R23 DATASHEET 三位半液晶片DATASHEET-This module is in my hot air gun to do before the company projects a module designed for real-time displays the current temperature, its accuracy can reach 1 degree Celsius, three semi-liquid crystal display, interface aesthetics, make a minor amendment to paragraph can also be used as a code LED display . Program features: 10-bit A/D Acquisition temperature (thermocouple) TN LCD driver code segment temperature compensation documents include: All C source code complete package of project documents (based on the MCU: HT46R23) PCB HT46R23 DATASHEET 3 semi-liquid crystal film DATASHEET

8051c 的一个Crc 算法分析-8051c of an algorithm analysis Crc

LED code tells you how to code

定时器中断实验代码， 定时器3进行0.1秒定时，每0.5秒改变一次P2,P3口的值以产生走马灯效果。-timer interruption experimental code, three timers for 0.1 seconds regularly, every 0.5 seconds to change a P2, P3 to the values I have merry-go-round effect.

采用89C51采集显示8颗卫星的时间，经纬度信息-Use of 89C51 collection displays eight satellites of time, latitude and longitude information

isd4003的驱动程序,主要用于驱动isd4003的录放,很有用的啊-isd4003 drivers, mainly for the driver isd4003 recorders, very useful ah!

根据公版自己做的usbasp板，添加了usbcdc。-According to the public version of their own to do usbasp board, added usbcdc.

使用AVR芯片MEGA16同时产生三路完全同步pwm频率波，1MHZ,1KHZ,1HZ.使用CVAVR软件编译-use AVR chip MEGA16 to generate three synchronous pwm of 1MHZ,1KHZ,and 1HZ。compiled by CVAVR

2812驱动128*64液晶,把该文件加到工程中，在主函数中初始化液晶既可用了．-2812 driver 128* 64 LCD, the document added to the project, in the main function can be used to initialize LCD.