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1. Attempt any FIVE of the
following: 10
a) Draw symbol and write truth
table of EX-OR gate.
b) Define terms “Minterm” and
“Maxterm” with proper example of each. *
c) Draw symbol of JK flipflop and
write its truth table. *
d) State importance of pipelining
in 8086 microprocessor. *
e) Give any four applications of
digital circuits.
f) Define the following terms - *
(i)
Physical Address
(ii)
Effective Address
g) Choose instruction for
following situations:
(i)
Addition of 16 bit Hex. No with carry
(ii)
Division of 8 bit No.
(iii)
Rotate content of BL by 4 bit.
(iv)
Perform logical AND operation of AX and BX.
h) State the function of linker
and debugger.
i) State any two Boolean laws with
expression.
j) Define:
i)
Bit
ii)
Nibble
k) Convert following number into
its equivalent Binary Number (146.25)10.
l) Draw three variable K-map
format.
m) List one application of each of
following:
(i)
Gray code
(ii)
ASCII code
n) State the principle of
multiplexer and mention its two types.
o) Draw the circuit of one bit
memory cell.
2. Attempt any THREE of the
following: 12
a) Convert following decimal to
octal and Hexadecimal **
(i)
(297)10 = ( )8
(ii)
(453)10 = ( )16
b) Convert the given minterm into
standard POS form *
Y(A,B,CD)
= (A·BC) + (B·C D) + (A B)
c) Draw symbol and write truth
table for the following flip flop and give one application of each. **
(i)
Clocked R–S flipflop
(ii)
T - Flip flop
d) Prove A (A + C) (A B + C) (ABC
+ C ) = 0
e) Minimize the following function
using K-map. F = Σm (0,1,2,3,11,12,14,15). *
f) Perform binary substraction
using 2’s complement of the following:
i)
(63)10 – (20)10 = ?
ii)
(34)10 – (48)10 = ?
g) Simplify the following Boolean
expression **
i)
Y = AB + ABC + AB + ABC
ii)
Y = (A + B) (A + B) (A + B).
iii)
Y = (A + BC) (B + CA)
h) Perform the following
subtraction using 1’s compliment and 2’s compliment (1010 0101)2 – (1110 1110).
i) Simplify the given equation
into standard SOP form Y = AB + AC + BC and represent the same equation in
standard POS form
3. Attempt any THREE of the
following: 12
a) Implement “OR” gate and “NOT”
gate using “Universal NAND” gate. Write expressions for both.**
b) Explain following instructions
for 8 bit and 16 bit data.
(i)
PUSH
(ii)
DAA
(iii)
IDJV
(iv)
XOR
c) Draw waves for positive and
negative edge triggering with proper lableing. Identify two situations where
these triggering can be used?
d) Simplify Y = F (A, B, CD) = Σm
(1, 2, 8, 9, 10, 12, 13) + d (4,5) using K-MAP and write expression. *
e) Interpret the given program and
specify the output for the
following situation.
MOV
AX, 34F9H
MOV
BX, 3A69H.
(i)
Masking of lower nibble of AX.
(ii)
Rotate right through carry contents of BX by 4 positions.
(iii)
Shift left contents of BX by 6 positions.
(iv)
XOR AX, BX
4. Attempt any THREE of the
following: 12
a) Suggest “Two instruction” for
each of the following addressing modes.
(i)
Register Addressing Mode
(ii)
Direct Addressing Mode
(iii)
Based Indexed Addressing Mode
(iv)
Immediate Addressing Mode
b) Minimize the expression and
draw logic circuit using basic gates.
F(A,B,CD)
= πm {0, 2, 4, 6, 7, 10, 11, 14, 15)
c) Compare combinational and sequential
circuits. Draw block diagram of sequential circuit and describe the function of
each block. **
d) (i) Differentiate between RISC
and CISC processor (Three point) **
(ii) Compare 8086 and 80586 (Pentium) (3
points)
e) Draw 16:1 multiplexer using 4:1
multiplexers “ONLY” with proper labels.
f) Explain the concept of
pipelining.
g) Explain concept of physical
address calculation with suitable diagram and examples. *
h) State and prove De-Morgan’s
Theorems.
i) Describe race-around condition
in JK flip flop and suggest ways to overcome it. *
j) Describe the use of flag register and segment
registers in 8086.
5. Attempt any TWO of the
following: 12
a) Write algorithm and 8086
assembly language program to find average salary of five employees of “SILICON
Systems” Assume 4 digit salary of each employee. Also - write output. *
b) Refer Fig. No. 1 and write
truth table and output “Y” write expression at output of gates. *
Redraw the “Fig. No. 1.”
d) List the addressing modes of 8086 and describe them with an example. ***
6. Attempt any TWO of the
following: 12
a) Draw architectural block
diagram of 8086 microprocessor and describe the function of each block. ***
b) Design full adder using K-MAP
and draw logic circuit using basic gates and write truth table. **
c) Write an assembly language
program to find the largest & smallest / Factorial number from an array of
a 10 numbers. Assume suitable data. ****
d) Define the following term with
respect the digital IC’s: *
(i)
Propogation delay
(ii)
Fan in
(iii)
Fan out
(iv)
Power Dissipation
(v)
Noise Margin
(vi)
Threshold Voltage.
e) Describe the use of shift and
rotate instructions as well as string instructions with the help of one
relevant examples of each.
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