Description: Proteus used a stopwatch and other circuit simulation software design and programming, detailed requirements are as follows: a two requirements of the LED driver chip digital control system with a button, a buzzer. Under normal circumstances LED display initial value 00, press a button, the stopwatch starts to move, time to update once per second and displayed. Then press a button, go stop, display the current second information. Press again to clear the stopwatch, back to show the initial value of 00 and stop. Each key, ask the buzzer sounds for 0.5 seconds.
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（最终版）ARM版protues秒表\1.DSN
..........................\1.PWI
..........................\Backup Of 1.DBK
..........................\Last Loaded 1.DBK
..........................\main.c
..........................\main.LST
..........................\main.OBJ
..........................\miaobiao
..........................\miaobiao.hex
..........................\miaobiao.M51
..........................\miaobiao.Opt
..........................\miaobiao.plg
..........................\miaobiao.Uv2
..........................\miaobiao_Opt.Bak
..........................\miaobiao_Uv2.Bak
..........................\暂停.bmp
..........................\清零.bmp
..........................\计数.bmp
..........................\陈玮代课内容.doc
（最终版）ARM版protues秒表
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