1. Decimal 43 in Hexadecimal and BCD number system is respectively
a. B2, 0100 0011
b. 2B, 0100 0011
c. 2B, 0011 0100
d. B2, 0100 0100
Solution : https://www.youtube.com/watch?v=5-6JKj9bNzI
2. The Boolean function f implemented in the figure using two input multiplexers is
Solution : https://www.youtube.com/watch?v=gWh-fumZFRI
3. The Boolean expression for the truth table shown is
Solution : https://www.youtube.com/watch?v=xCS-TTQvhp8
4. The present output Qn of an edge triggered JK flip-flop is logic ‘0’. If j = 1, then Qn+1 is
a. Cannot be determined
b. Will be logic ‘0’
c. Will be logic ‘1’
d. Will race around
Solution : https://www.youtube.com/watch?v=3Txg02Wb8N0
5. The given figure shows a ripple counter using positive edge triggered flip-flops. If the present state of the counter is Q2Q1Q0 = 011, then its next state Q2Q1Q0 will be
a. 010
b. 100
c. 111
d. 101
Solution : https://www.youtube.com/watch?v=iZWdwF2lfmw
6. What memory address range is NOT represented by chip #1 and chip #2 in the figure. A0 to A15 in this figure are the address lines and CS means chip select.
a. 0100 – 02FF
b. 1500 – 16FF
c. F900 – FAFF
d. F800 – F9FF
Solution : https://www.youtube.com/watch?v=bv_jlwR4ivs
Statement for linked Answer Questions 7 & 8 :
Consider an 8085 microprocessor system.
7. The following program starts at location 0100H.
LXI SP, 00FF
LXI H, 0701
MVI A, 20H
SUB M
THE Contents of accumulator when the program counter reaches 0109H is
a. 20H
b. 02H
c. 00H
d. FFH
Answer:
8. If in addition, following code exists from 0109H onwards.
ORI 40H
ADD M
What will be the result in the accumulator after executing the last instruction?
a. 40H
b. 20H
c. 60H
d. 42H
Answer:
Solution (7 & 8):
a. B2, 0100 0011
b. 2B, 0100 0011
c. 2B, 0011 0100
d. B2, 0100 0100
2. The Boolean function f implemented in the figure using two input multiplexers is
3. The Boolean expression for the truth table shown is
4. The present output Qn of an edge triggered JK flip-flop is logic ‘0’. If j = 1, then Qn+1 is
a. Cannot be determined
b. Will be logic ‘0’
c. Will be logic ‘1’
d. Will race around
5. The given figure shows a ripple counter using positive edge triggered flip-flops. If the present state of the counter is Q2Q1Q0 = 011, then its next state Q2Q1Q0 will be
a. 010
b. 100
c. 111
d. 101
6. What memory address range is NOT represented by chip #1 and chip #2 in the figure. A0 to A15 in this figure are the address lines and CS means chip select.
a. 0100 – 02FF
b. 1500 – 16FF
c. F900 – FAFF
d. F800 – F9FF
Statement for linked Answer Questions 7 & 8 :
Consider an 8085 microprocessor system.
7. The following program starts at location 0100H.
LXI SP, 00FF
LXI H, 0701
MVI A, 20H
SUB M
THE Contents of accumulator when the program counter reaches 0109H is
a. 20H
b. 02H
c. 00H
d. FFH
Answer:
8. If in addition, following code exists from 0109H onwards.
ORI 40H
ADD M
What will be the result in the accumulator after executing the last instruction?
a. 40H
b. 20H
c. 60H
d. 42H
Answer:
Solution (7 & 8):
No comments:
Post a Comment