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Design a 4-bit Full Adder with inputs (X0...X3, Y0...Y3.), in which inputs X are connect to...

Design a 4-bit Full Adder with inputs (X0...X3, Y0...Y3.), in which inputs X are connect to two 4-bit registers via four 2-to-1 Multiplexers and inputs Y are connected to two other 4-bit registers via four 2-to-1 Multiplexers. In this case, assume that Carry in is always zero (and is therefore pull down) and that the register outputs 4-bits at a time. Please make sure to show the proper connections between Full adder, MUXS, and registers.

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Answer #1

the circuit design is mentioned below:

I have added input x_select and y_select to select the input register value for addition

the design process is simple to select the input register on the bases on the input x_select and Y_Selct the output performs addition operation.

each mux has to perform the same function hence the inputs of the select lines is the same.

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