Logic Gates Ppt
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Logic Gates
AND Gate
NAND Gate
XOR Gate
OR Gate
NOR Gate
XNOR Gate
BUFFER Gate
NOT Gate
SUMMARY
AND Gate If both of the INPUT is high then the OUTPUT is high. TRUTH TABLE
INPUT OUTP UT A
A B
Y=A.B
B
Y
0
0
0
0
1
0
1
0
0
1
1
1
OR Gate If at least one of the INPUT is high then the OUTPUT is high. TRUTH TABLE
INPUT OUTP UT A
A B
Y=A+B
B
Y
0
0
0
0
1
1
1
0
1
1
1
1
NOT Gate If INPUT is high then the OUTPUT is low .If INPUT is low then the OUTPUT is high.
TRUTH TABLE
A
Y=A
INPUT
OUTPUT
A
Y
0
1
1
0
BUFFER Gate If INPUT is high then the OUTPUT is high .If INPUT is low then the OUTPUT is low.
TRUTH TABLE
A
Y=A
INPUT
OUTPUT
A
Y
0
0
1
1
NAND Gate If at least one of the INPUT is low then the OUTPUT is high. TRUTH TABLE
INPUT OUTP UT A
A B
Y=A.B
B
Y
0
0
1
0
1
1
1
0
1
1
1
0
NOR Gate If both of the INPUTs are low then the OUTPUT is high. TRUTH TABLE
INPUT OUTP UT A
A B
Y=A+B
B
Y
0
0
1
0
1
0
1
0
0
1
1
0
XOR Gate If all the INPUTs aren’t equal then the OUTPUT is high. TRUTH TABLE
INPUT OUTP UT A
A B
Y=A+B
B
Y
0
0
0
0
1
1
1
0
1
1
1
0
XNOR Gate If all the INPUTs are equal then the OUTPUT is high. TRUTH TABLE
INPUT OUTP UT A
A B
Y=A+B
B
Y
0
0
1
0
1
0
1
0
0
1
1
1
SUMMARY AND Gate Y=A.B
OR Gate Y=A+B
BUFFER Gate Y=A
NAND Gate Y=A.B
XOR Gate Y=A+B
NOR Gate Y=A+B
XNOR Gate Y=A+B
NOT Gate Y=A Where A & B are INPUTs and Y is OUTPUT.
THE END
Designed by Rasika
AND Gate
NAND Gate
XOR Gate
OR Gate
NOR Gate
XNOR Gate
BUFFER Gate
NOT Gate
SUMMARY
AND Gate If both of the INPUT is high then the OUTPUT is high. TRUTH TABLE
INPUT OUTP UT A
A B
Y=A.B
B
Y
0
0
0
0
1
0
1
0
0
1
1
1
OR Gate If at least one of the INPUT is high then the OUTPUT is high. TRUTH TABLE
INPUT OUTP UT A
A B
Y=A+B
B
Y
0
0
0
0
1
1
1
0
1
1
1
1
NOT Gate If INPUT is high then the OUTPUT is low .If INPUT is low then the OUTPUT is high.
TRUTH TABLE
A
Y=A
INPUT
OUTPUT
A
Y
0
1
1
0
BUFFER Gate If INPUT is high then the OUTPUT is high .If INPUT is low then the OUTPUT is low.
TRUTH TABLE
A
Y=A
INPUT
OUTPUT
A
Y
0
0
1
1
NAND Gate If at least one of the INPUT is low then the OUTPUT is high. TRUTH TABLE
INPUT OUTP UT A
A B
Y=A.B
B
Y
0
0
1
0
1
1
1
0
1
1
1
0
NOR Gate If both of the INPUTs are low then the OUTPUT is high. TRUTH TABLE
INPUT OUTP UT A
A B
Y=A+B
B
Y
0
0
1
0
1
0
1
0
0
1
1
0
XOR Gate If all the INPUTs aren’t equal then the OUTPUT is high. TRUTH TABLE
INPUT OUTP UT A
A B
Y=A+B
B
Y
0
0
0
0
1
1
1
0
1
1
1
0
XNOR Gate If all the INPUTs are equal then the OUTPUT is high. TRUTH TABLE
INPUT OUTP UT A
A B
Y=A+B
B
Y
0
0
1
0
1
0
1
0
0
1
1
1
SUMMARY AND Gate Y=A.B
OR Gate Y=A+B
BUFFER Gate Y=A
NAND Gate Y=A.B
XOR Gate Y=A+B
NOR Gate Y=A+B
XNOR Gate Y=A+B
NOT Gate Y=A Where A & B are INPUTs and Y is OUTPUT.
THE END
Designed by Rasika
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