Digital Electronics - Combinational Logic Circuits - Discussion

Discussion Forum : Combinational Logic Circuits - General Questions (Q.No. 26)
26.
The binary numbers A = 1100 and B = 1001 are applied to the inputs of a comparator. What are the output levels?
A > B = 1, A < B = 0, A < B = 1
A > B = 0, A < B = 1, A = B = 0
A > B = 1, A < B = 0, A = B = 0
A > B = 0, A < B = 1, A = B = 1
Answer: Option
Explanation:
No answer description is available. Let's discuss.
Discussion:
15 comments Page 2 of 2.

Chandan said:   1 decade ago
Yes, sudeep give correct explanation.

Sudeep said:   1 decade ago
As far I am thinking its a comparator which compares two numbers.
A is 1100 (12) , B is 1001 (9). A>B (TRUE so 1) , A<B (FALSE so 0) , A=B (FALSE so 0).

Well I am not sure whether I am following the correct logic.

Adarsha.barkua said:   1 decade ago
A=1100 AND B=1001
SO both having equal number of one's and zero's but the value is differs. A is greater compare to B but it's having equal no of one's (A>B=1) same holes good for next statement but considering zero's A value is smaller compare to B but its having equal number of zero's (A<B=0) and finally both are equal (A=B=0) zero indicate hr (A-B) but in the form of number of ones and zero's present both are equal so zero.

Selva said:   1 decade ago
I can't understand the logic in a given options.

Please any one explain me the logic.

Xyz said:   1 decade ago
Please someone explain this logic.


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