Digital Electronics - Logic Gates - Discussion
Discussion Forum : Logic Gates - General Questions (Q.No. 52)
52.
Which of the following equations would accurately describe a four-input OR gate when A = 1, B = 1, C = 0, and D = 0?
Discussion:
5 comments Page 1 of 1.
ANJANEYA PATTANAIK said:
3 years ago
A+B=A OR B.
AB= A AND B.
1 = TRUE
0 = FALSE.
1+1+0+0.
= TRUE OR TRUE OR FALSE OR FALSE.
= TRUE.
(IF ONLY ONE OF ALL INPUTS FOR THE 'OR' OPERATOR OR GATE IS TRUE, THEN THE RESULT IS TRUE).
THUS, 1+1+0+0=TRUE=1.
NOW,
00 = FALSE AND FALSE = FALSE,
01 = FALSE AND TRUE = FALSE.
(RESULT FOR AN 'AND' OPERATOR OR GATE IS TRUE ONLY IF ALL ITS INPUTS ARE TRUE)
THEREFORE, 1+1+0+0=1.
AB= A AND B.
1 = TRUE
0 = FALSE.
1+1+0+0.
= TRUE OR TRUE OR FALSE OR FALSE.
= TRUE.
(IF ONLY ONE OF ALL INPUTS FOR THE 'OR' OPERATOR OR GATE IS TRUE, THEN THE RESULT IS TRUE).
THUS, 1+1+0+0=TRUE=1.
NOW,
00 = FALSE AND FALSE = FALSE,
01 = FALSE AND TRUE = FALSE.
(RESULT FOR AN 'AND' OPERATOR OR GATE IS TRUE ONLY IF ALL ITS INPUTS ARE TRUE)
THEREFORE, 1+1+0+0=1.
(2)
Shivani said:
1 decade ago
We can use + because OR use + symbol.
1+1=1, 1+0=1, 1+0=1.
So Answer is 1.
1+1=1, 1+0=1, 1+0=1.
So Answer is 1.
(1)
Nandhini said:
1 decade ago
I didn't get the answer any one can explain me clearly?
Barani said:
9 years ago
The output of the OR gate would be 1, when anyone of the input 1.
So, the given combination will be 1100.
So, the given combination will be 1100.
Anil Tandi said:
4 years ago
You explained very well, Thanks @Shivani.
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