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Tuesday, 21 November 2017

CSE261 : Computer Organization and Architecture Assignment Question paper - 1 / End Term Exam Question Paper


Question 1.
Enable bit plays an important role in decoder expansions. How is this justified in designing?

(a) 3X8 line decoder using two 2X4 line decoders

(b) 5X32 line decoder using four 3X8 and one 2X4 line decoders

Question 2.
How can a JK flip flop be converted to

(a) T Flip Flop

(b) D Flip Flop

Question 3.
Identify at least two application areas (discuss their roles also) for

(a) Encoder/Decoder

(b) Multiplexers/De multiplexer

(c) Flip Flops

Question 4.
Discuss the basic logic behind counters i.e. how will you obtain 1000(8) from 0111(7)?
How will you implement the same? 
How many flip flops will be complemented in a 10 bit binary counter to reach the next count after 1001100111?


Question 5.
What will happen if buffer gate in the clock input of the register is removed? 
What is the role of clear and load signals in designing register with parallel load? 

Question 6.
The content of a four bit register is initially 1101. The register is shifted six times to the right with the serial input being 101101. What is the content of the register after each shift?

Question 7.
Draw the block diagram to implement following register transfer statement

yT2: R2?R1, R1?R2

Question 8.
A digital computer has a common bus system for 16 registers of 32 bit each. The bus is constructed with multiplexers.

(a) How many selection inputs are there in each multiplexer?

(b) What sizes of multiplexers are needed?

(c) How many multiplexers are there in the bus?


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