M.C.A. (Semester (CBCS) Examination Oct/Nov-2017
Science
DIGITAL CIRCUITS AND MICROPROCESSORS
Day Date: Thursday, 23-11-2017 Max. Marks: 70
Time: 10.30 AM to 01.00 PM
Instructions: Q.1 and Q.2 are compulsory
Attempt any Three Questions from Q.3 to Q.7
Figures to the right indicate full marks.
Q.1 Choose the correct alternatives 10
Multiplexer is circuit which has
Many one O/P Many Many O/P
One Many O/P None of these
To remove race around condition if F/F is used.
RS JK
T MS JK
In IC 7402 NOR gates are designed.
3 4
6 8
In Full Adder Gate gives SUM.
AND OR
NOT X OR
The 8086 microprocessor has byte pipeline are used.
3 4
6 8
The memory capacity for 8086 microprocessor is
32 K 64 K
128 K 1 MB
In arithmetic operation in 8085 microprocessor, result always stored in
register.
Acc B
Source None of these
The Half adder has O/P.
2 3
1 4
In 8086 microprocessor Segment registers are used.
2 3
1 4
10) A 0
0 1
A None of these
Page 2 of 2
SLR-SM-5
State true or false: 04
In Combinational circuit memory are used to store the last condition
result.
NOT gate is a complimentary gate.
The data bus for 8085 is a 16 bit.
RET is data transfer instruction.
Q.2 Draw the architecture of 8085. Explain it in brief. 08
Design basic gates by using both universal gates. 06
Q.3 Draw internal architecture of 8086. Explain EU section. 08
Explain Decoder. 06
Q.4 Define multiplexer? Explain 4 to 1 and Nibble Multiplexer. 08
Explain SISO? 06
Q.5 Define Explain JK and MS Jk F/F. 08
Explain minimum mode of 8086. 06
Q.6 Give classification of instruction set of 8086. Explain with suitable example. 08
Write ASM program for arithmetic operation in 8085. 06
Q.7 Explain half and full adder with its logic diagram. 08
Write a note on Ring counter. 06