1. Which among the following is an appropriate binary conversion for the number 421 (which is of base 10)?
10101010
11010100
10011001
110100101
2. If A and B are two input ends of AND logic gate and AB is the only output. What will be the output if the input is A=1 and B=0?
1
0
101
01
10
3. If ∆ represents ‘1’ and ○ represents ‘0’. What will be the one’s complement of - ○∆∆○○∆?
011001
100110
101010
000000
111111
4. Following diagram depicts which logic gate?
NOR gate
NOT gate
OR gate
NAND gate
None of the above
5. Which of the following is a correctset of hexadecimal digits?
102n
a19fk
ZOLO12
FACE
0101xx
6. Which of the following is a Logical Conjunction?
AND gate
OR gate
NOT gate
both(a) and (b)
All of the above
7. If Ӣ represents ‘1’ and Ṉ represents ‘0’. A and B are two input ends of OR logic gate and C is the only output. What will be the output if the input is A=Ӣ and B=Ӣ?
ṈӢ
Ṉ
Ӣ
ӢṈ
ӢṈӢ
8. Which of the following is not a valid binary number?
00000
11111
FFFFF
101010
010101
9. Which of the following symbol represents decisional or conditional statement in a flow chart?
a
b
c
d
e
10. What are the permitted digits that can be used in Octal Number system?
0-10
1-9
0-8
0-7
1-8
Answers:
- d
- b
- b
- b
- d
- a
- c
- c
- c
- d