Combinational Circuits

Realization of AND and OR Gates using diodes and NOT Gate using transistors
IC chips packaging nomenclature
Multi-bit adders – Ripple carry and Carry Look Ahead Adder
BCD-Adder
Reductions(b)
Universal function realization(b)

Standard Gate Assemblies(b)
Half and Full Adder(3 & bit)
Adder/subtractor
Data selectors/multiplexers – expansions
Function realization(b)
Digital Electronics
Multi-function realization(b)

Decoders

Function realization
Encoder
Parity bit Generator/checker
Code Converters
Seven segment display unit

De-multiplexer and function realization
Priority Encoder
Gray Code Generator
Keyboard encoder(b)
Comparators

Sequential Circuits

Model of Sequential computing

Difference between Combinational and Sequential circuit

RS-Latch

Using NAND and NOR Gates
Problems of Basic Latch circuits
Rising time
Clocked Flip Flops - SR
JK
T
Excitation Functions of each flip-flops

RS Latch as a Static RAM Cell
Digital Clock – Duty Cycle
Falling time
D
Level Trigger and Edge Trigger
Flip-flops with Preset and Clear

Application of Flip-flops

Asynchronous Counter(UP/DOWN) upto 4 bit counter
Mod – n Counter
Synchronous Counters – different mod counters
Johnson’s Counter
Registers with parallel load

Decade Counter
Finite State machine Model – State Transition Diagram and Table
Ring counter
Registers
Shift Registers

Data Converter

D/A Conversion principle using basic circuit
Counter based A/D converter
DTL and TTL NAND gate circuits and its operations
SSI
LSI

R-2R Ladder circuit
Successive approximation method for A/D conversion
Fan in & Fan out
MSI
VLSI classifications

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