Hardware Lab-I (Digital Circuits & Logic Design) Notes
Subject Overview
The practical companion to Digital Circuits & Logic Design, covering basic electronics components and hands-on verification of logic gates, arithmetic circuits, code converters, and flip-flop and counter circuits. A 2-credit core lab paper.
Subject at a glance
1
Units
10
Topics
2
Credits
1
Infographics
Unit-wise Syllabus
1 units — open any unit for detailed topic-wise notes, diagrams and important exam questions
- Introduction to diodes
- transistors and TTL/MOS technology
- truth table verification of basic logic gates
- arithmetic circuits (half/full adder and subtractor)
- BCD-to-binary and binary-to-BCD converters
- BCD-to-decimal and BCD-to-7-segment decoders
- BCD-to-decimal and octal-to-binary encoders
- R-S/J-K/Master-Slave J-K/D flip-flop circuits using gates and ICs
- ring counters
- asynchronous and synchronous counters
- 1
Identify the IC
e.g. 7408 AND, 7432 OR, 7400 NAND
- 2
Check pin diagram
Vcc on pin 14, GND on pin 7
- 3
Wire on the breadboard
- 4
Apply input combinations
- 5
Observe LEDs
Record the truth table
- 6
Compare with theory
Study guide
In this hardware lab you build and verify circuits: an introduction to diodes, transistors and TTL and MOS technology, truth-table verification of basic gates, adders and subtractors, BCD-to-binary and binary-to-BCD converters, BCD-to-decimal and 7-segment decoders, encoders, flip-flops built with gates and ICs, ring counters and asynchronous and synchronous counters. Check connections twice before powering a circuit, and always verify the output against the truth table.
Why Hardware Lab-I (Digital Circuits & Logic Design) Matters
Building circuits on a breadboard makes digital logic real and builds troubleshooting skills useful in electronics and embedded roles.
How to Prepare for Hardware Lab-I (Digital Circuits & Logic Design)
- Draw the circuit and pin connections before wiring.
- Verify every circuit against its truth table.
- Handle ICs carefully and respect power supply limits.
Hardware Lab-I (Digital Circuits & Logic Design): Frequently Asked Questions
What is built in the digital hardware lab?
Gate circuits, adders, converters, decoders, encoders, flip-flops and counters using ICs on a breadboard.