GATE CS Subject
Digital Logic GATE CS Questions
- 258 questions in this subject
- Years covered: 1987-2026
- Topic: Boolean Algebra
- Topic: Logic Gates
- Topic: K-Maps
- Topic: Flip-Flops
- Topic: Combinational Circuits
- Topic: Sequential Circuits
Overview & Analysis
Digital Logic is a fundamental hardware subject representing 4 to 6 marks in GATE CS. It establishes the building blocks of computer memory and processing logic.
Questions cover Boolean algebraic minimization, Karnaugh Maps (K-maps), multiplexers, decoders, flip-flops, counter design (synchronous/asynchronous), and state machine analysis.
Frequently Asked Questions (FAQ)
Q: What is the best way to minimize Boolean functions for GATE?
A: Use Karnaugh Maps (K-maps) for up to 4 or 5 variables. For larger variables or algebraic proofs, apply Boolean algebra theorems such as consensus, demorgan's, and duality.
Q: How do I calculate the modulus of a digital counter?
A: Determine the state sequence of the flip-flops. The modulus (MOD-N) is the total number of unique states the counter visits before returning to its starting state.
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