Newbie need help

Archiver

I don't know where to start with the right command. Button, Scankey
or other?

I have a bs2sx and I want to design 3 little boards each will have a
n/o momentary switch and a led. I want to determine while pressing
all 3 switches, which switch was pressed first and only light up
that led board then reset it again.


Thanks,

Todd