
	Trending ▼ ICSE CBSE 10th ISC CBSE 12th CTET GATE UGC NET Vestibulares ResFinder

Pune University - FY BSc ELECTRONIC SCIENCE - II, April 2010

2 pages, 34 questions, 0 questions with responses, 0 total responses,

	pune_sci	+Fave Message
	Profile Timeline Uploads Q & A

Home > pune_sci >

Instantly get Model Answers to questions on this ResPaper. Try now!
NEW ResPaper Exclusive!

Formatting page ...

Total No. of Questions : 5] P200 [Total No. of Pages : 2 [3717] - 22 F.Y. B.Sc. ELECTRONIC SCIENCE EL1T2 : Principles of Digital Electronics (Paper - II) (New Course) (2008) Time : 3 Hours] [Max. Marks : 80 Instructions to the candidates: 1) All questions are compulsory. 2) Neat labelled diagram must be drawn wherever necessary. 3) Use of calculators and log tables is allowed. 4) Figures to the right indicates full marks. Q1) Answer the following questions in brief : [16] a) Define positive logic and negative logic. b) What is hexadecimal number system? Give its examples. c) Draw logic symbol of following gates : AND, NAND, NOR, NOT. d) Write 2 s complement of binary number-101011. e) Define combinational and sequential logic circuits. f) What is decade counter? Name the IC which contain decade counter. g) Define logic families. h) Define memory capacity. Q2) Attempt any Four of the following : [16] a) Draw the logic circuit of two input AND gate using transistors. Write its truth table and explain it. b) Explain the method of converting Gray code to binary code and convert (101011)Gray = (......)2. c) Convert the following i) (35)10 = ( )2 = ( )16 ii) (1110.10)2 = ( )10 = ( )8. d) What is parity bit? Explain how Ex-OR gate can be used as parity generator. e) Draw the logic circuit for the following boolean equations using basic gates i) y = AB + BC + CD; ii) y = (A + B) ( A + C); f) Simplify the given boolean equation and draw the logic circuit using basic logic gates y = AB C + ABC + BC. P.T.O. Q3) Attempt any four of the following : [16] a) Why NAND gate is called basic building block? Design OR gate using only NAND gates. b) What is Half Adder? Draw its logic circuit using gates. Write its truth table. c) Draw logic diagram of 3-bit universal adder/subtractor. Explain the action with suitable example. d) Explain 2 : 1 multiplexer with logic diagram & truth table. e) What is encoder? Draw logic diagram of decimal to BCD encoder. f) Define the term modules of a counter. Design mod 12 counter using Flip-Flops. Q4) Attempt any four of the following : [16] a) Draw logic diagram of 1 to 4 line demultiplexer. Explain its action with truth table. b) What is decoder? Explain BCD to 7 segment decoder. c) What is synchronous counter? State its advantages and disadvantages over asynchronous counter. d) Draw logic circuit of JKFF. Write its truth table. e) Explain serial in serial out shift register with proper circuit. f) What do you mean by down counter? Explain 3-bit up-down counter using proper diagram. Q5) Attempt any four of the following : [16] a) Write a short note on noise immunity. b) Draw the circuit of CMOS NAND gate. Explain its action. c) Describe the operation of 2 input DTL NAND gate. d) Explain sequential memory and read write memory. e) What do you mean by volatile and nonvolatile memories? f) What is full adder? Draw its logic circuit. Write its truth table and boolean equation. [3717]-22 vvvv 2

Formatting page ...

Additional Info : F.Y.BSc. ELECTRONIC SCIENCE EL1T2 : Principal of Digital Electronics (New Course)(2008) (Paper - II), Pune University
Tags : pune university exam papers, university of pune question papers, pune university science, pune university courses, bsc pune university, msc pune university, pune university solved question papers, pune university model question paper, pune university paper pattern, pune university syllabus, old question papers pune university

pune_sci chat

Horizontal lines at:
Guest Horizontal lines at:
AutoRM Data:
Box geometries: