EC3352 DIGITAL SYSTEMS DESIGN

UNIT I BASIC CONCEPTS

Review of number systems-representation-conversions, Review of Boolean algebra- theorems, sum of product and product of sum simplification, canonical forms min term and max term, Simplification of Boolean expressions-Karnaugh map, completely and incompletely specified functions, Implementation of Boolean expressions using universal gates, Tabulation methods.

 UNIT II COMBINATIONAL LOGIC CIRCUITS

Problem formulation and design of combinational circuits – Code-Converters, Half and Full Adders, Binary Parallel Adder – Carry look ahead Adder, BCD Adder, Magnitude Comparator, Decoder, Encoder, Priority Encoder, Mux/Demux, Case study: Digital trans-receiver / 8 bit Arithmetic and logic unit, Parity Generator/Checker, Seven Segment display decoder

 UNIT III SYNCHRONOUS SEQUENTIAL CIRCUITS

Latches, Flip flops – SR, JK, T, D, Master/Slave FF, Triggering of FF, Analysis and design of clocked sequential circuits – Design – Moore/Mealy models, state minimization, state assignment, lock – out condition circuit implementation – Counters, Ripple Counters, Ring Counters, Shift registers, Universal Shift Register. Model Development: Designing of rolling display/real time clock

 UNIT IV ASYNCHRONOUS SEQUENTIAL CIRCUITS

Stable and Unstable states, output specifications, cycles and races, state reduction, race free assignments, Hazards, Essential Hazards, Fundamental and Pulse mode sequential circuits, Design of Hazard free circuits.

 UNIT V LOGIC FAMILIES AND PROGRAMMABLE LOGIC DEVICES

Logic families- Propagation Delay, Fan – In and Fan – Out – Noise Margin – RTL, TTL, ECL, CMOS – Comparison of Logic families – Implementation of combinational logic/sequential logic design using standard ICs, PROM, PLA and PAL, basic memory, static ROM, PROM, EPROM, EEPROM EAPROM.

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