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What conditions are required for a three input AND gate to have its output on?

What conditions are required for a three input AND gate to have its output on?

Rule for an AND gate: output is “high” only if first input and second input are both “high.” Rule for an OR gate: output is “high” if input A or input B are “high.” Rule for a NAND gate: output is not “high” if both the first input and the second input are “high.”

How logic gates can be used as switches?

Digital logic gates whose inputs and output can switch between two distinct logical values of 0 and 1, can be defined mathematically simply by using Boolean Algebra. Digital logic gates are the basic building blocks from which all digital electronic circuits and microprocessor based systems are made.

What is the maximum number of outputs a logic gate can have?

Fan-out is a term that defines the maximum number of digital inputs that the output of a single logic gate can feed. Most transistor-transistor logic ( TTL ) gates can feed up to 10 other digital gates or devices. Thus, a typical TTL gate has a fan-out of 10.

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How do you make a 3 input gate?

Try using two OR gates and three Input Blocks to create a 3-input OR gate.

  1. Draw a schematic diagram for this circuit.
  2. Write out a truth table for this circuit. Like the 3-input AND circuit, this circuit will have 8 possible sets of input. But there should be a lot more 1’s on the output column!

What is the Boolean expression for a 3 input AND gate?

The Boolean expression for a 3-input OR gate is ________. 63. From the truth table for a three-input NOR gate, what is the only condition of inputs A, B, and C that will make the output X high?…Exercise :: Logic Gates – General Questions.

A. A = 1, B = 1, C = 1
C. A = 0, B = 0, C = 1
D. A = 0, B = 0, C = 0

How many possible gates are there with two inputs and one output?

For example, the gate A and B is a logic gate with 2 inputs and 1 output. There are exactly 16 of them, because: each logic gate takes two inputs, which can be truthy or falsey, giving us 4 possible inputs.

Which gate used as switch?

Transmission gates are used in order to implement electronic switches and analog multiplexers. If a signal is connected to different outputs (changeover switches, multiplexers), multiple transmission gates can be used as a transmission gate to either conduct or block (simple switch).

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What type of logic gate can be used in a staircase switch?

XOR and XNOR gates are formed by a combination of AND-OR-INVERT (AOI) logic. This application demonstrates the use of logic gates that simulates a 2-way switch like the ones in our homes to turn a staircase light ON/ OFF from switches located on two different floors.

Can a logic gate have two outputs?

But there are many logic families that use differential signaling. ECL comes to mind, it was one of the first logic families. In most ECL gates there is both the true and complement outputs. Thus two outputs per gate.

Can a logic gate have more than one output?

Yes, one output can usually drive multiple inputs. The exact amount of how many inputs it can drive depends on the type of logic of the inputs (how much of a load it presents) and the output (how much load can it drive).

Which logic gate is combination of and and NOT gate?

This basic logic gate is the combination of AND and NOT gate. This gate is the combination of OR and NOT gate. In XOR gate the output of a two-input XOR gate attains the state 1 if one adds only input attains the state 1. A. B ˉ + A ˉ. B In XNOR gate the output is in state 1 when its both inputs are the same that is, both 0 or both 1.

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What is the output of a NOT gate?

A NOT gate produces an output that is the complement of the input. It has only one input signal. It produces a 1 output when the input is 0. and It produces a 0 output when the input is 1.

What is the difference between exclusive-or and 2-input X-OR gates?

An exclusive-OR (X-OR) gate is an anti-coincidence gate. It produces a 1 output only when the odd number of 1 is present at a time. A 2-input X-OR gate is an inequality detector. It produces a 1 output only when its two inputs are not equal i.e when one input is 1 or 0.

What is the difference between coincidence gate and x-NOR gate?

An exclusive-NOR (X-NOR) gate is a coincidence gate. It produces a 1 output only when even number of 1 is present at the input. A 2-input X-NOR gate is an equality detector. It produces a 1 output only when its two inputs are equal i.e when both inputs are 1 or 0.