4029 Up-Down Counter – Supercharged Science

Let’s build a digital alarm! In this experiment we’ll modify the circuit from experiment 90, workbook 2, to be a digital alarm. The circuit will countdown and when it reaches zero, the alarm will sound. We’ll also add in a switch so that the alarm part of the circuit can be disabled.

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	Getting Started With Digital Logic 1
	Getting Started With Digital Logic: Logic Gates
	Build a Simple Logic Probe
	Understanding Truth Tables
	4001 Quad NOR Gate: Build a Simple LED Flasher
	4001 Quad NOR Gate: Build a Fancy LED Flasher
	4001 Quad NOR Gate: Build a Set-Reset Latch
	4001 Quad NOR Gate: Build a Control Gate
	4001 Quad NOR Gate: Build a Latched Relay
	4049 Hex Inverter
	4070 Quad Exclusive OR Gate: Build a Binary Half Adder
	4011 Quad NAND Gate: How the NAND Gate Works
	4011 Quad NAND Gate: Make a Red-Green
	4011 Quad NAND Gate:How to Make an OR Gate
	4011 NAND Gate:Build a Simple Tone Generator
	4011 NAND Gate:Build a Better Tone Generator
	4011 NAND Gate:Build a Pulsating Tone Generator
	4070 Quad Exclusive: Build a Binary Full Adder
	4070 Quad Exclusive OR Gate
	4066 Quad Switch: Getting to Know the 4066
	4013 Dual Flip-Flop: Build and Understand a Data Flip-Flop
	4013 Dual Flip-Flop: Build a Divide-By-Two Circuit
	4013 Dual Flip-Flop: Build a Binary 2-Bit Counter
	4013 Dual Flip-Flop: Build a 1-of-4 Sequencer
	4017 Decade Counter – Make a Switch Bounce Analyzer
	4017 Decade Counter – Make a Totalizer
	4017 Decade Counter – Build a Count-to-N And Halt Counter
	4017 Decade Counter – Build a Bargraph Readout
	4017 Decade Counter
	4511 Seven-Segment Decoder-Driver
	4029 Up-Down Counter

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