DE (B-TECH electronics and communication engineering 4th)

1. Number System And Binary Code :

 Introduction, Binary, Octal and hexadecimal number

system. Signed and unsigned number, Binary operations-addition; Subtraction, Multiplication and

division; Subtractions using 1's and 2's compliment; ASCII code; Excess 3 code Gray code.

2. Minimization of logic function : 

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

Boolean Algebra, sum of products and product of sums, canonical form, Minimisation using

theorems, minimisation using K-map and Q-M method. Incompletely specified functions.

3. Combinational Logic Circuits :

 Introduction, Combinational circuit design, multiplexers,

demultiplexer, encoders, decoders, adders, subtracters and code converters, parity checker, BCD

display drive, magnitude comparators.

4. Sequential Circuits :

 Introduction, flip flop SR, JK, D, T edge triggerred and decked flip-flop,

Registers. Type of Registers, circuit diagram, timing wave form and operations counters, counter

design with state equation and state diagrams.

5. 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, Voltage of frequency conversion, Voltage of time

conversion.

6. Semiconductor Memories :

 Introduction, Memory organisation, Classification and

characteristics of memories, Sequential memories, ROMs, R/W memories. Content addressable

memories. Programmable logic arrays, Charged-Coupled device memory.

7. Logic Families : 

RTL, DCTL, DTL, TTL, ECL and its various types, Comparison of logic

families.