Welcome to the N1IR Electronics Website. Totally off the cuff, one take, unrehearsed video projects for anyone interested in amateur radio, electronic design, makers, hardware hackers and science.
Get off your duff and build something!Training the hand and mind since 1982.
Thursday, January 25, 2018
Typical Shop Day
Here is a typical day with a lab, this was the 12th grade shop assignment for the day. We were to construct a 4520 4 bit counter and test to make sure it works, then and design and build a 8 bit counter using two 4520's. A counter is a digital circuit which is used for a counting pulses and is the widest application of flip-flops. It is a group of flip-flops with a clock signal applied. Counters are of two types, Asynchronous or ripple. Pic are below
Board work and circuit explanation
Datasheet for students
Working example of the 4 bit 4520 shown to students