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output is feedback in input

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∙ 2010-07-28 03:52:02
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Q: How could you produce 3 input AND gate if you have only 2 input AND gate available?
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How could you produce 3 input OR gate if you have only 2 input OR gate available?

To produce a 3-input OR gate when only 2-input OR gates are available: Use 3 OR gates Inputs to Gate A are input 1 and input 2 Input to Gate B is input 3 (if 2 inputs are necessary, include input 3 and FALSE) Inputs to Gate C are outputs from Gate 1 and Gate 2 === If input 1 OR 2 is TRUE, output of Gate A will be TRUE. If input 3 is TRUE, output of Gate B will be TRUE. If output of Gate A OR Gate B is TRUE, output from Gate C will be TRUE. That is if one ore more of Inputs 1, 2 or 3 is TRUE, the result will be TRUE. Otherwise, output of Gate C will be FALSE.


What is the flag input of AND gate?

To produce a 3-input OR gate when only 2-input OR gates are available: Use 3 OR gates Inputs to Gate A are input 1 and input 2 Input to Gate B is input 3 (if 2 inputs are necessary, include input...


What is the ic number of and gate?

For two input AND gate it is 7408for three input AND gate it is 7411


Which input combination will produce logic 1 at the output of a 4-input NOR gate?

All inputs hae to be low i.e 0.


How can you make a three input OR gate with a two input OR gate?

connect the output of two input or gate with the two input or gate1.one input of or gate no.1 is output of or gate and another input is taken and hence final output of or gate no1 is formed three input or gate. i.e let o/p of or gate is A+B which is one i/p of gate no1. and let another i/p is C. and final i/p is Y=(A+B)+C=A+B+C


What is the pin configuration of ic 7408?

this shows you everything you need about them Pin Number Description 1 A Input Gate 1 2 B Input Gate 1 3 Y Output Gate 1 4 A Input Gate 2 5 B Input Gate 2 6 Y Output Gate 2 7 Ground 8 Y Output Gate 3 9 B Input Gate 3 10 A Input Gate 3 11 Y Output Gate 4 12 B Input Gate 4 13 A Input Gate 4 14 Positive Supply


How do you get not gate from nor gate?

To get a not gate (or inverter) from nor gate, tie the two input together. If fan-in is a concern, tie one input to logic false and drive the other input.


The OR gate can be converted to the NAND function by adding which gate to the input of the OR gate?

NOT Gate


How do you draw a diagram using two- two input AND gates to make a three input AND gate?

You would connect the output of the first AND gate to one input of the second AND gate. You are left with 2 inputs on the first AND gate and 1 input on the second AND gate. The final output is from the second AND gate.


What is a not gate in electronics?

A not gate is a logical gate which inverts a digital signal. If the input to a not gate is 1, then the output will be 0. If the input is 0, then the output will be 1.


The OR gate can be converted to the NAND function by adding----gate to the input of the OR gate?

not


Truth table for 3 input NAND gate?

Truth table for a 3 input NAND gate?

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