beginner electronicsWhat Is a Counter Circuit? Simple Student Guide
Learn what a counter circuit does, how clock pulses become binary counts, and how teachers can demonstrate counters with LEDs.
From the workbench
News
Teaching notes, project walkthroughs, and hands-on electronics guides from Gary and the Mr Circuit team.
5 posts
Updated Jul 22, 2026
beginner electronicsWhat Is an Integrated Circuit? Beginner Guide
Learn what an integrated circuit is, what a chip contains, and how to teach IC orientation and function in beginner electronics lessons.
555 timerWhat Is a 555 Timer? Simple Student Guide
Learn what a 555 timer is, what timing and oscillation mean, and how to teach this classic chip with simple beginner circuit...
7-segment displayWhat Is a 7-Segment Display? Simple Student Guide
Learn what a 7-segment display is, how seven LED bars form numbers, and how to teach common anode vs common cathode safely.
555 timerHow a 555 Timer Works in a Beginner Circuit
Learn what a 555 timer does, how RC timing changes its output, and how to explain monostable and astable modes to beginners.