Electronics - Logic Gates - Discussion
Discussion Forum : Logic Gates - General Questions (Q.No. 2)
2.
If a signal passing through a gate is inhibited by sending a low into one of the inputs, and the output is HIGH, the gate is a(n):
Discussion:
18 comments Page 1 of 2.
Rita said:
10 years ago
Its is NAND gate but nt OR gate because:
NAND gate.
--------------
a b y
0 0 1 <---
0 1 1.
1 0 1.
1 1 o.
OR gate.
-----------
a b y.
0 0 0 <---
0 1 1.
1 0 1.
1 1 1.
If you observe both truth table you will get to know.
We are sending a low into one of the input and other may be one or zero but the output must be HIGH.
It's only in NANA GATE 111.
NAND gate.
--------------
a b y
0 0 1 <---
0 1 1.
1 0 1.
1 1 o.
OR gate.
-----------
a b y.
0 0 0 <---
0 1 1.
1 0 1.
1 1 1.
If you observe both truth table you will get to know.
We are sending a low into one of the input and other may be one or zero but the output must be HIGH.
It's only in NANA GATE 111.
(2)
E.Murugan. said:
1 decade ago
OR gate is wrong answer because the signal given in the input is not inhibit in or gate i.e it allows the signal given in the second input terminal.
Example:
A = Input signal which is inhibited.
B = 0 (given in the question).
But in NAND gate, it inhibits the signal and provides high output.
Example:
A = Input signal which is inhibited.
B = 0 (given in the question).
But in NAND gate, it inhibits the signal and provides high output.
Khushahmaddin said:
1 decade ago
In NAND Gate the frequency is low only when there is high input. But when low or dissimilar frequency input entered the output is high frequency.
i/p1 i/p2 AND NAND
----------------------------
0 0 0 1
0 1 0 1
1 0 0 1
1 1 1 0
NAND is NOT of AND gate.
i/p1 i/p2 AND NAND
----------------------------
0 0 0 1
0 1 0 1
1 0 0 1
1 1 1 0
NAND is NOT of AND gate.
Getaneh alehegn said:
1 decade ago
Of course, NAND gate also the answer but OR gate also satisfy the conditions. Because OR gate has low output if all inputs are low!
x y x+y
0 0 0
0 1 1
1 0 1
1 1 1
x y x+y
0 0 0
0 1 1
1 0 1
1 1 1
(1)
Sanjida said:
1 decade ago
i/p1 i/p2 AND NAND
----------------------------
0 0 0 1
0 1 0 1
1 0 0 1
1 1 1 0
NAND is NOT of AND gate.
----------------------------
0 0 0 1
0 1 0 1
1 0 0 1
1 1 1 0
NAND is NOT of AND gate.
Shawan Banerjee said:
1 decade ago
In NAND Gate the frequency is low only when there is high input. But when low or dissimilar frequency input entered the output is high frequency.
Ashish singhal said:
1 decade ago
NAND GATE=AND+NOT
our output is high when inputs are zero.
Truth Table
A B AB y
0 0 0 1
0 1 0 1
1 0 0 1
1 1 1 0
our output is high when inputs are zero.
Truth Table
A B AB y
0 0 0 1
0 1 0 1
1 0 0 1
1 1 1 0
Fembright said:
9 years ago
NOT gate inhibit the action of AND gate, and OR gate is not inhibit by any other gate so B is the answer.
(1)
Izhar khan(jmi) said:
1 decade ago
NAND GATE is a universal gate and behave as a inverter so if input is low then output must be high.
Shipra Ghosh said:
1 decade ago
OR gate is also correct.. even i thought it could be the ans. but it isnt.. please justify...
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