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Title: PWM Download
 Description: 【实验题目】 用PWM方波调节LED亮度 【实验目的】 掌握PWM的基础知识 进一步熟悉定时器的用法 【硬件接法】 P1.1控制LED，低电平点亮 K3和K4分别接在P3.4、P3.5，按下时为低电平 【实验步骤】 ISP下载开关扳到“00”，用Flash Magic软件下载程序文件“PWM-LED.hex”，运行。 【运行效果】 按K3可调暗LED，按K4可调亮LED。
 Downloaders recently: [More information of uploader awqqli]
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实验5 用PWM方波调节LED亮度\说明.txt
..........................\C51\main.c
..........................\...\main.LST
..........................\...\main.OBJ
..........................\...\PWM-LED
..........................\...\PWM-LED.hex
..........................\...\PWM-LED.M51
..........................\...\PWM-LED.Opt
..........................\...\PWM-LED.plg
..........................\...\PWM-LED.Uv2
..........................\...\PWM-LED_Uv2.Bak
..........................\A51\main.asm
..........................\...\main.LST
..........................\...\main.OBJ
..........................\...\PWM-LED
..........................\...\PWM-LED.hex
..........................\...\PWM-LED.M51
..........................\...\PWM-LED.Opt
..........................\...\PWM-LED.plg
..........................\...\PWM-LED.Uv2
..........................\...\PWM-LED_Uv2.Bak
..........................\C51
..........................\A51
实验5 用PWM方波调节LED亮度

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