III YEAR – VI
SEMESTER
COURSE CODE: 7BPH6C2
CORE COURSE XIV –
DIGITAL ELECTRONICS
Unit I FUNDAMENTALS
Codes and Number Systems–Decimal, Binary, Octal and
Hexadecimal number systems–Inter conversions–8421BCD code–Other 4 bit BCD
codes–Excess 3 code–Graycode
Basic LOGIC gates – AND, OR, NOT, NAND, EX-OR
functions – their truth tables. NAND
& NOR as Universal gates – De Morgan's theorem – Boolean Algebra - associative
law, commutative law and distributive law.
Unit II COMBINATIONAL
LOGIC
Binary Arithmetic Circuits – Half Adder – Full Adder–
8421 BCD Adder – Half Subtractor – Full Subtractor.
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.
Registers &
Counters : Registers – Shift Registers – Shift Right, Shift Left
Registers – Counters – Ring counter – Asynchronous (Ripple) Counter – Mod 10
counter – 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 accuracy and resolution.
Unit V MEMORY
CIRCUITS AND MICROPROCESSORS
Programming bipolar PROMS – MOS static RAM cell – MOS
dynamic RAM cell.
Microprocessors: Introduction to microprocessor - internal
architecture of Intel 8085 microprocessor - Block diagram – Registers - internal
Bus organization- functional details of 8085 IC pins and Control signals.
Text Books:
1. Integrated
Electronics – Millman
and Halkias, International Ed., McGraw Book Co., New Delhi, 1972.
2. Digital
Principles and Application – Malvino and Leach, , 4th Ed., Tata McGraw
Hill, VI Edn, New Delhi, 2008.
3. Fundamentals
of Digital Electronics and Microprocessor– Anokh Singh and A.K. Chabra, ,
S.Chand and Co Ltd, II Edn., New Delhi, 2005.
Books for Reference:
1. Digital
Technology Principle and Practice – Virendra Kumar, New Age International Pvt. Ltd., New Delhi, 2005.
2. Digital
Fundamentals – Floyd and Jain, Pearson Edn. Singapore, 2006
3. Digital
Circuits and Logic Design – Samuel.C.Lee, Prentice Hall of India Pvt.Ltd, New
Delhi, 2005