Exercise: Digital Electronics

Questions for: Digital Electronics

If A = B = 1, the outputs P and Q in the given figure are
A:
P = Q = 0
B:
P = 0, Q = 1
C:
P = 1, Q = 0
D:
P = Q = 1
Answer: B

It is a half adder 1 + 1 = 10. Therefore SUM = P = 0 and Carry = Q = 1.

📖
📝
💬
👁️
In a shift left register, shifting a bit by one bit means
A:
division by 2
B:
multiplication by 2
C:
subtraction of 2
D:
None of the above
Answer: B

In binary shift one bit left means multiplication by 2.

📖
📝
💬
👁️
610 = __________ 2
A:
11111.1001
B:
10111.1001
C:
00111.101
D:
10111.1
Answer: B

23= 10111 and 0.6 =10011 Hence 10111 . 10011 .

📖
📝
💬
👁️
Decimal -90 equals __________ in 8 bit 2s complement
A:
1000 1000
B:
1010 0110
C:
1100 1100
D:
0101 0101
Answer: B

+90 in binary is 01011010. Its 2's complement is 10100110.

📖
📝
💬
👁️
The complement of exclusive OR function is
A:
AB + A B
B:
AB + A B
C:
A B + A
D:
AB + A B
Answer: B

Complement of XOR is X NOR.

📖
📝
💬
👁️
Ad Slot (Above Pagination)
Quiz