Trivial Circuit Design

General
1

EE's / Circuit Wizards,

I need to build a simple circuit which is nevertheless beyond my
skills. Here's the rundown:

Components:
2 Switches
1 Timer (thousands of a second resolution)

Operation:
1) Circuit begins with Switch 1 closed and Switch 2 open.
2) Switch 1 opens and Timer starts.
3) Switch 2 closes and Timer stops.
4) Timer displays delta time.

Any suggestions of where to start?

2

AVR or arduino. A lot of it is going to depend on what display you want and its interface requirements.
You could also probably do this with a 4040 or 4060 and a few bcd ICs. Kind of depends what you’re looking for.
Dave.