The control button LED marquee, read the key state, set the corresponding LED lamp IO port, IO port settings button S1, Key scan the current state of implementation of the marquee effect when pressed.

4.buttons control the LED Marquee
.................................\4.按键控制LED跑马灯.pdf
.................................\Key
.................................\...\Debug
.................................\...\.....\Exe
.................................\...\.....\...\Key.d51
.................................\...\.....\...\Key.hex
.................................\...\.....\List
.................................\...\.....\Obj
.................................\...\.....\...\Key.pbd
.................................\...\.....\...\main.r51
.................................\...\Key.dep
.................................\...\Key.ewd
.................................\...\Key.ewp
.................................\...\Key.eww
.................................\...\main.c
.................................\...\settings
.................................\...\........\Key.cspy.bat
.................................\...\........\Key.dbgdt
.................................\...\........\Key.dni
.................................\...\........\Key.wsdt
.................................\~$按键控制LED跑马灯.doc
.................................\后面的实验都是V1.0，新版更强大哦.txt

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