III YEAR – VI
SEMESTER
COURSE CODE:
4BPH6C2
CORE COURSE XIV –
DIGITAL ELECTRONICS
Unit I DIGITAL FUNDAMENTALS
Codes and Number Systems –
Decimal, Binary, Octal and Hexadecimal number systems – Inter conversions –
8421 BCD code – Other 4 bit BCD codes – Excess 3 code – Gray code.
Basic LOGIC Gates – AND, OR,
NOT, NAND, EX-OR functions – their Truth tables. NAND & NOR as Universal
gates – De Morgan's theorem – Associative law, Commutative law – Distributive
law.
Unit II COMBINATIONAL LOGIC
Binary Arithmetic Circuits –
Half Adder – Full Adder– 8421 BCD Adder – Half Subtractor – Full Subtractor -
Boolean Algebra – Boolean theorems.
Simplification of Boolean
functions – Algebraic simplification – AND-OR logic – NAND-NAND net work – OR –
AND logic – NOR-NOR network – Sum of Products & Product of Sums – Karnaugh
mapping of Two, Three, Four variables – Don't care conditions
Unit III SEQUENTIAL LOGIC
Flip-Flop – R-S Flip-Flop – Clocked R-S Flip-Flop – D
Flip-Flop- J-K Flip-Flop – Triggering of Flip-Flop – Master Slave Flip-Flop.
Registers & Counters – Registers – Shift Registers –
Shift Right, Shift Left Registers – Counters – Ring counter – Johnson's ring
counter – Asynchronous (Ripple) Counter – Different modulii Counters – up
counter – down counter – Synchronous Counter – Different modulli Counters.
Unit IV D/A AND A/D CONVERTERS
Introduction – Variable
resistor network – Binary ladder – D/A Converter – D/A accuracy and resolution
– A/D converter.
Simultaneous conversion –
Counter method – Successive approximation – A/D – A/D accuracy and resolution.
Unit V MEMORY CIRCUITS AND SYSTEMS
Programming bipolar PROMS – MOS
static RAM cell – MOS dynamic RAM cell – Refreshing circuits – Charged Coupled
devices – Basic CCD operations.
Magnetic bubble memory –
Auxiliary memory storage – Magnetic disk, floppy disk and Winchester
Books for Study
1. Millman
and Halkias, Integrated Electronics, International Ed., McGraw Book Co., New Delhi
2.
Malvino and Leach, Digital Principles and
Application, 4th Ed., Tata McGraw Hill, New Delhi, VI Edn, 2008.
3.
Anokh Singh and A.K. Chhabra, Fundamentals of
Digital Electronics and Microprocessors, S.Chand and Co Ltd, New Delhi, II Edn,
2005.
4.
A. Subramanyam – Applied Electronics – NPC –
2005
Books for Reference
1.
Virendra Kumar – Digital Technology Principle
and Practice – New Age International Pvt. Ltd. – 2005.
2.
Floyd – UBS – 2005 – Digital Fundamentals.
3.
Samuel.C.Lee–Digital Circuits and Logic
Design–Prentice Hall of India