Help me teach my son (and myself) electronics
September 13, 2010 6:10 PM Subscribe
My son got a 130-in-1 electronics lab for his 8th birthday and discovered digital logic from MacCauley's How Things Work. Now he wants to build a half-adder. Help?
posted by rikschell to education (15 answers total) 13 users marked this as a favorite
The instruction book gives examples of individual logic gates and combinations, but what it doesn't give is a good foundation in circuit building principles. We have built and gates, or gates, and not gates, we've wired two switches for input and LEDs for output, but we haven't been able to successfully combine them all.
Can you give a recommendation on a good foundations of electronics primer (book or online resource)? As a kid I wired things in parallel and in series, but all these transistors and dipole switches and resistors are confusing me.
Can you point me to a wiring diagram for a half adder with all the transistors/resistors/7400 IC/ whatever explicitly shown? All I've found just show gates connected to other gates assuming you can figure out how to wire them yourself.
Or is there a place I can rent a retired electrical engineer?