B.C.A. (Semester II) (CBCS) Examination Oct/Nov-2017
Digital Electronics
Day Date: Friday, 17-11-2017 Max. Marks: 70
Time: 10.30 AM to 01.00 PM
Instructions: All questions are compulsory.
Figures to the right indicate full marks.
Neat diagram must be drawn wherever necessary.
Q.1 Choose the correct alternatives: 14
The 8086 has byte instruction queue.
4 6
8 10
NOT gate is
One I/P one O/P Two I/P one O/P
One I/P two O/P None of these
The control word of register base CPU organization is
10 12
14 16
The binary 110 Gray code.
101 111
100 010
Memory type have high speed.
Cache RAM
HDD None of these
In virtual memory management address converts to physical
address.
Physical Logical
Arithmetic None of these
is 16 bit processor.
4004 8085
8086 Pentium
Half adder circuit has I/P.
2 3
1 4
When all the I/P of AND gates is then O/P is one.
0 1
Both 0 and 1 None of these
10) The MMX technology introduced in
8086 8088
80386 Pentium
11) The decimal 10 is equivalent to
00010000 1010
00000001 10
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SLR-SD-9
12) Method is a software priority interrupt.
polling daisy chain
parallel series
13) To resolve data from stack, it use
LIFO FIFO
LILO FILO
14) Bit length of each segment registers used in 8086
16 20
32 8
Q.2 Solve any seven from the following 14
Explain concept of pipeline.
Explain RS232.
Explain USB.
Explain Half adder.
Explain X OR gate.
Explain RISC
Explain polling
State segment register used in 8086
Explain Bus System used in microprocessor.
Q.3 Attempt any two of the following
State and explain flag register used in 8086.
Explain with suitable diagram register based CPU Organization.
Explain different types of memory hierarchy.
10
Write a note on K-map 04
Q.4 Attempt any two of the followings: 14
Explain content addressable memory.
What is DMA? Explain DMA transfer with suitable diagram.
Design basic gates by using universal gates.
Q.5 Attempt any two of the followings: 14
Explain with suitable diagram asynchronous up counter.
Explain different types of virtual memory configuration.
Draw internal block diagram of 8086. Explain general purpose register of
8086 microprocessor.