Newbie question: I want to control a linear array of about 100 LEDs with a PC. I want the PC to light up a particular LED (working from data in Excel) and then be switched off again, either from the PC or by an operator hitting a touch-switch or button next to the LED.
The LEDs / switches will be mounted on the edge of a bench to facilitate ordered assembly of coloured tiles.
I was thinking some sort of "Christmas-light" controller might do the job - or do I need a programmable logic controller? I'm reasonably fluent in software - mostly VBA - and a quick study, but right now I'm just starting in on control-related stuff, and very much a newbie. Any suggestions, links, resources welcome.