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Digital Electronics: Principles, Devices and Applications

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270 <strong>Digital</strong> <strong>Electronics</strong>I 0I 1I 2I 301234-to-1MUXO/PX 1 X 0Y(a)X 10 00 11 01 1X 0I 0(b)I 1I2I 3YFigure 8.1(a) 4-to-1 multiplexer circuit representation <strong>and</strong> (b) 4-to-1 multiplexer truth table.GABCD0D1D2D3D4D5D6D78-to-1MUXYWInputsSelectC B AXLLLLHHHHXLLHHLLHHXLHLHLHLHEnableGHLLLLLLLLOutputYLD0D1D2D3D4D5D6D7G : ENABLE inputA, B, C : Select inputsD0-D7 : Data inputsY,W : outputsWHD0D1D2D3D4D5D6D7(a)(b)Figure 8.2(a) 8-to-1 multiplexer circuit representation <strong>and</strong> (b) 8-to-1 multiplexer truth table.

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