DCLD (B-TECH Electronics and Communication Engineering 3rd)

Unit I Number System and Binary Code:

 Introduction, Binary, Octal and Hexadecimal Number System

(Conversion, Addition & Subtractions). Signed and unsigned numbers, Binary Subtractions using 1's and 2's

compliment, ASCII code, Excess 3 code, Grey code, BCD code and BCD additions.

Unit II Minimization of logic function:

 OR, AND,NOT,NOR,NAND,EX-OR, EX-NOR, Basic theorem of

Boolean Algebra, Sum of Products and Product of Sums, canonical form, Minimization using K-map and Q-M

method.

Unit III Combinational Circuits:

 Introduction, Combinational circuit design, Encoders, decoders, Adders, Sub

tractors and Code converters. Parity checker, seven segment display, Magnitude comparators.

Multiplexers, De-multiplexer, Implementation of Combinational circuit using MUX.

Unit IV Sequential Circuits: Introduction, flip flops, Clocked flip flops, SR, JK, D, T and edge triggered flipflops.

Excitation tables of Flip flops. Shift Registers, Type of Shift Registers, Counter, Counter types, counter design with

state equation and state diagrams.

Unit V D/A and A/D Converters: 

Introduction, Weighted register D/A converter, binary ladder D/A

converter, steady state accuracy test, D/A accuracy and resolution, parallel A/D converter, Counter type A/D

converter Successive approximation A/D converter. Single and dual slope A/D converter, A/D accuracy and

resolution.

Unit VI Semiconductor Memories:

 Introduction, Memory organisation, Classification and characteristics of

memories, Sequential memories, ROMs, R/W memories. Content addressable memories. PLA and PAL.

Unit VII Logic Families: RTL, DCTL, DTL, TTL, ECL, CMOS and its various types, Comparison of logic

families.