B.TECH - Semester 3 digital system design Question Paper 2021 (oct)
Practice authentic previous year university questions for better exam preparation.
- Differentiale behween synchronous and asynchronous counters.
- (b) Implement the following expressions using NAND gates only
- (c) Derive the POS expression for the function $$ f=\left(x_{1}^{\prime}+x_{2}-x_{3}\right)\left(x_{1}^{\prime}+x_{2}^{\prime}\right)\left(x_{2}-x_{5}^{\prime}\right) $$ OR
- (a) Design a full subtractor circuil using NOR gales only.
- 305 : DIGITAL SYSTEM DESIGN (FR) (2013 scheme) Time : 3 irours Max. Marks : 100 Answer all lhe queslions. Each queslion carries 2 marks.
- Find the simplified Boolean function for the expression $(x+y)\left(x+y^{\prime}\right)$. 2 Give the Boolean expression for a hall subtractor.
- Draw the circuit of a half adder using NAND gates only-
- Define race condilion.
- Slate the uses of shilf registers.
- What is meanl by PLD?
- Mention the modeling styles supported by the Verilog hardware description Janguage.
- Find the result when 0101 is added with 0110 using BCD addition.
- Differentiate between resloning and non-restoring division. $$ (10 \times 2=20 \text { Marks }) $$ Answer one full queslions from each module. Each question carries 20 marks.
- (a) Slate the principle of duality and explain it with an example.
- (b) Explain the basic theorems of Boolean algebra.
- (i) $A B^{\prime}+A B D+A B D^{\prime}+A^{\prime} C^{\prime} D+A^{\prime} B C^{\prime}$ (ii) $B D+B C D^{\prime}+A B^{\prime} C^{\prime} D^{\prime}$. 13 (a) Design and implement a BCD to Excess 3 code convertor with a neal circuil diagram.
- (b) Draw the circuil diagram of a $4 \times 1$ multiplexer and write ils function lable.
- (a) With a neat diagram explain the working of the J-K Flip Flop and T Flip Flop.
- (b) Draw the slate transition lable for an asynchronous sequential circuit and explain ils design precedure.
- (a) Draw a four bit ring counter and explain its liming sequences in detail $\quad 10$
- (b) Design a BCD Counler using JK Flip Tops Ihal can counl 0000, 0001, 0010 , 1000, 1001, 1010, 1011, 1110, 1111 and repeat.
- (a) Design a programmable Logic Array with 3 inpuls, 2 oulputs and 4 product terms
- (b) Explain the vanous lypes of randum access memory. Module - IV
- (a) Draw the block diagram of a BCD adder and explain its operation.
- (b) Explain the BCD subtraction operation using 1's complement method wilh an example.
- (a) Explain the Boolh's multiplicalion algorillm in delail.
- (b) Explain the algorithm for floaling point addition and sublraclion usirg a fiow chart.
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