SathyaGopi
Answered On : Jun 1st, 2005
NAND gate becomes AND gate when used with negative logic.
NAND gate turth table(with -ve logic)
0 0 0
0 1 0
1 0 0
1 1 1 -> this is truth table of AND gate

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poornima.V
Answered On : Aug 25th, 2005
C this website. Ans is Nor gate. that is convert one tozeroes and vice versa.
http://www2.ele.ufes.br/~ailson/digital2/cld/chapter2/Ex02.doc.html
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Neha Sinha
Answered On : Oct 31st, 2005
It becomes an and gate
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ankit garg
Answered On : Jan 6th, 2006
my lord.it becomes a AND Gate ....such a simple question.
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Anjum
Answered On : Mar 21st, 2006
When used with negative logic means that the inputs are inverted.
If the inputs of a nand gate are inverted and given, the output will be an OR of the inputs. De morgans law (A'.B')' = A + B
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geek
Answered On : Apr 18th, 2006
OR gate is the right answer

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adhisrijina
Answered On : May 30th, 2006
ANS is nor gate
negative logic means a high is interpreted as low and vice-versa
poornima is right

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sateesh
Answered On : Jun 11th, 2006
it is so simple it becomes an AND gate when we use negative logic becuase NAND means that Negaive AND
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sudhanshu
Answered On : Jul 10th, 2006
The NAND gate becomes a "OR" gate because
(a'.b')' = ((a+b)')' = a+b (by De-Morgan's)
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Nor gate
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pearlin
Answered On : Jul 28th, 2006
it is NOR ofcourse
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it is NOR gate. Lets analyse how.
In positive logic 0s are considered low and 1s as high voltages. In negative logic 0s are high and 1s are low. Now the truth table for Nand is
A B Y A(V) B(V) Y(V)-> positive logic
0 0 1 low low high
0 1 1 low high high
1 0 1 high low high
1 1 0 high high low
Now when used as negative logic then the truth table will be
A B Y
1 1 0
1 0 0
0 1 0
0 0 1
hence it is NOR gate.
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abhilash
Answered On : Sep 12th, 2006
an and gate with negative logic becomes nor gatetruth table for and gate is0 0 - 01 0 00 1 01 1 1we get 1 1 1 0 it is for nor gate
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Anitha
Answered On : Oct 13th, 2006
OR gate
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OR gate
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OR gate
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hardik parikh
Answered On : Oct 27th, 2006
hi , it will become AND gate at there.
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Ben
Answered On : Nov 1st, 2006
First of all, a NAND gate is not (a'.b'), it is (a.b)' -- that is, (a'+b'). When you negate this, you get (a'+b')' which you can then de-morgan to get (a.b). So a NAND gate become AND
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nagalakshmi
Answered On : Dec 4th, 2006
it becomes 'OR' gate..so simple apply Demorgan's laws..u will get 'OR'.

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shirish
Answered On : Jul 23rd, 2007
The ans is OR GATE.

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ediots go to page no 64 fig 2.11 NAND with negative logic is nor
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ya sudhansu has explained it correctly...
actually from de-morgan's
(a'b')'=((a+b)')=(a+b)
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he dude it will b or gate so simple logic----
(a'b')'=a''+b''=a+b
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Yes i think it becomes nor gate because using a negative logic doesn't mean doing any mathematically. it means just suposing zero to be one and viceversa
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OR GATENAND gate in negative logic (convert 1s to 0s & vice versa of positive logic)
1 1 1
1 0 1
0 1 1
0 0 0
This is truth table of OR gate
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It becomes a NOR gate
L L H
L H H
H L H
H H L
Now assume
H=1 and L=0 we get NAND
H=0 and L=1 we get NOR
Similarly for AND gate we get OR gate
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NAND gate with negative logic becomes a NOR gate with positive logic.
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It is OR gate.
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SUBASH
Answered On : Sep 11th, 2012
NOR gate
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