Previous year question paper for DE2 (Diploma Electronics and Communication Engineering 4th)

Digital Electronics - 2

Previous year question paper with solutions for Digital Electronics - 2 from 2014 to 2018

Our website provides solved previous year question paper for Digital Electronics - 2 from 2014 to 2018. Doing preparation from the previous year question paper helps you to get good marks in exams. From our DE2 question paper bank, students can download solved previous year question paper. The solutions to these previous year question paper are very easy to understand.

1. Logic Families

a) Logic family classification. TTL, ECL, MOS, CMOS. Types of integration

SSI,MSI, LSI, VLSI

b) Characteristics of TTL and CMOS and the comparison. Propagation delay.

Speed, noise margin. Logic levels., power dissipation, fan-in, fan-out,

power supply requirements

c) Open collector and totem pole output circuits, operation of a standard TTL,

CMOS, NAND, NOR gates

d) CMOS to TTL interfacing and TTL to CMOS interfacing

e) Introduction to tri-state devices, tri-state buffer and inverter circuits.

(08 hrs)

2. A/D and D/A Converters

a) D/A Converters : Performance characteristics of D/A converters, binary

resister network and resistance ladder network methods of D/A converters

and applications

b) A/D Converters : Performance characteristics of A/D converters, single

slope, dual slope, successive approximation and parallel A/D converters

(08 hrs)

3. Memories

Memory organisation, classification of semi conductor memories, ROM, PROM,

DROM, EPROM, EEPROM, RAM, expansion of memory. CCD memories,

content addressable memory, programmable logic devices, PROM at PLD,

programmable logic array (PLA) programmable array logic (PAL), field

programmable gate array (FPGA), familiarization with common ICs.

(12 hrs)

4. Combinational Circuits

Minimization of Boolean expressions using Quine Mcclaaskey method

(04 hrs)

5. Sequential Circuits

Essential components of sequential circuit, synchronous and asynchronous

sequential circuits, classification of sequential circuits (Meely and Moore

Machine), design of counters using J-K and R-S flip-flops.

(08 hrs)

6. Arithmetic and Logic Unit

Basic idea about arithmetic logic unit w.r.t. IC 74181 and applications,

implementation of binary multiplication, division, subtraction and addition

(04 hrs)

7. Introduction to Fuzzy logic

Fuzzy sets and classical sets and their operations, Fuzzy relations, Properties of

membership functions, Fuzzification, Defuzzfication, Fuzzy control system

2018
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2016
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2015
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2014
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