Logic Gates Implementation using Multiplexer #ece #vlsi #osmaniauniversity #engineering #vlsidesign #LogicGates #Multiplexer #DigitalLogic #BooleanAlgebra #CMOS #VLSI #IntegratedCircuits #ComputerEngineering #Electronics #ElectricalEngineering #Engineering #TechTutorial #KZfaqTutorial
Multiplexers (MUX) can be used to implement various logic gates, including AND, OR, NOT, NAND, NOR, and XOR gates. A multiplexer is a device that selects one of several input signals and forwards the selected signal to its output based on the state of its selection inputs.
Here's how you can implement various logic gates using multiplexers:
AND gate: A 2-input AND gate can be implemented by using a 2-to-1 MUX with one of its inputs as the AND of the two inputs, and the other input as 0. The selection input of the MUX is connected to one of the inputs.
OR gate: A 2-input OR gate can be implemented by using a 2-to-1 MUX with one of its inputs as the OR of the two inputs, and the other input as 0. The selection input of the MUX is connected to 0.
NOT gate: A NOT gate can be implemented by using a 2-to-1 MUX with both of its inputs as the same signal. The selection input of the MUX is connected to the input signal.
NAND gate: A NAND gate can be implemented by using an AND gate and a NOT gate in combination. The output of the AND gate is fed as an input to the NOT gate, which provides the NAND output.
NOR gate: A NOR gate can be implemented by using an OR gate and a NOT gate in combination. The output of the OR gate is fed as an input to the NOT gate, which provides the NOR output.
XOR gate: A 2-input XOR gate can be implemented by using a 4-to-1 MUX with its inputs as the AND and NAND of the two inputs. The two selection inputs of the MUX are connected to the inputs.
In summary, multiplexers can be used to implement various logic gates by properly connecting the inputs and selection inputs. However, it's worth noting that multiplexer-based implementations may be less efficient in terms of power consumption and area compared to implementations using dedicated logic gates.
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