EC3352 Digital Systems Design Notes - Anna University Regulation 2021

EC3352 Important Topics (Unit-wise)

These are the most important unit-wise topics for EC3352 (Digital Systems Design - R2021). Practice these topics regularly to strengthen core concepts and improve exam performance.

Unit I – Basic Concepts

• Boolean algebra simplification (Sum of Products and Product of Sums)
• Karnaugh Map (K-Map) simplification (including don’t care conditions)
• Canonical forms (Minterm and Maxterm representation)
• Implementation using universal gates (NAND and NOR)
• Tabulation method (Quine–McCluskey method)
• Number system conversions and representations

Unit II – Combinational Logic Circuits

• Design of combinational circuits (step-by-step problem solving)
• Adders: Half Adder, Full Adder, Carry Look Ahead Adder
• Multiplexer and Demultiplexer (design and applications)
• Encoder, Decoder and Priority Encoder
• Magnitude Comparator
• Arithmetic Logic Unit (ALU – basic design concepts)
• Code converters and BCD Adder
• Parity generator and checker

Unit III – Synchronous Sequential Circuits

• Flip-Flops (SR, JK, D, T) and their conversions
• Design of sequential circuits using Moore and Mealy models
• State diagram, state table and state minimization
• Counters (Ripple, Synchronous, Ring counters)
• Shift Registers (including Universal Shift Register)
• Clocking and triggering methods of Flip-Flops

Unit IV – Asynchronous Sequential Circuits

• Race conditions and race-free state assignment
• Hazards (Static, Dynamic, Essential hazards)
• Design of hazard-free circuits
• Stable and unstable states
• Fundamental mode and pulse mode circuits

Unit V – Logic Families and Programmable Logic Devices

• Characteristics of logic families (TTL, CMOS, ECL comparison)
• Propagation delay, Fan-in, Fan-out, Noise margin
• Programmable Logic Devices (PROM, PLA, PAL)
• Memory devices (ROM, EPROM, EEPROM)
• Implementation of logic circuits using standard ICs