Digital Electronics - Combinational Logic Circuits - Discussion
Discussion Forum : Combinational Logic Circuits - General Questions (Q.No. 28)
28.
Two 4-bit binary numbers (1011 and 1111) are applied to a 4-bit parallel adder. The carry input is 1. What are the values for the sum and carry output?
4321 = 0111, Cout = 04321 = 1111, Cout = 14321 = 1011, Cout = 14321 = 1100, Cout = 1Discussion:
7 comments Page 1 of 1.
Avinash Chauhan said:
9 years ago
---1 <- Previous Carry
1011
1111
-------
1 1011 <- Cout is 1 and result is 1011.
@Narendra, @Anjana, @Biswajit.
Consider the carry input given in the question.
1011
1111
-------
1 1011 <- Cout is 1 and result is 1011.
@Narendra, @Anjana, @Biswajit.
Consider the carry input given in the question.
(1)
Vidhya said:
6 years ago
There is a carry input given in the question which will be added to the LSB of the given bits then we can obtain the sum as 1011 and carry as 1.
Sudeep Kumar Rana said:
1 decade ago
---1 <- Previous Carry
1011
1111
-------
1 1011 <- Cout is 1 and result is 1011
-------
1011
1111
-------
1 1011 <- Cout is 1 and result is 1011
-------
Anjana said:
9 years ago
You are correct @Narendr. There must be some mistake in the option.
Narender said:
9 years ago
1011
+1111
_______
1010
_______
Hence, 1010 and carry 1.
+1111
_______
1010
_______
Hence, 1010 and carry 1.
Biswajit said:
9 years ago
Anser will be 1010 as sum and carry 1.
(1)
Dopham said:
7 years ago
You are correct @Avinash Chauhan.
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