richjd

Grand Falls, New Brunswick, Canada Joined November 13th, 2006
4 Instructables 46,331 Views 13 Comments 9 Followers

Retired teacher and High School Principal. Teacher of math, science, digital electronics, computer leteracy, computer programing

richjd's Instructables

About OHM and His LAW

Trigonometric Functions

J-K Flip-Flop - How It Works

ADS Instant DVD USB2.0 That Shuts Down