How to Implement a 16x1 Multiplexer with Two 8x1 Multiplexers and One OR Gate

17 Nov 2021

How can you implement a 16x1 multiplexer using two 8x1 multiplexers and one OR gate?

Answer:

To implement a 16x1 multiplexer using two 8x1 multiplexers and one OR gate, follow these steps:

Connect the 16 data inputs (D0-D15) of the 16x1 multiplexer to the corresponding data inputs of the two 8x1 multiplexers (MUX1 and MUX2).
Connect the 4 control inputs (S0-S3) of the 16x1 multiplexer to the corresponding control inputs of MUX1.
Connect the 3 control inputs (S0-S2) of MUX1 to the corresponding control inputs of MUX2.
Connect the output of MUX1 to one input of the OR gate.
Connect the output of MUX2 to the other input of the OR gate.
Connect the output of the OR gate to the output of the 16x1 multiplexer.

The Detailed Explanation:

To implement a 16x1 multiplexer using two 8x1 multiplexers and one OR gate, you need to connect the input and control signals in a specific way to achieve the desired output. Here is a step-by-step guide on how to accomplish this:

Step 1: Connect the Data Inputs

Connect the 16 data inputs (D0-D15) of the 16x1 multiplexer to the corresponding data inputs of the two 8x1 multiplexers (MUX1 and MUX2). This ensures that the data signals are transferred to the appropriate multiplexers for processing.

Step 2: Connect the Control Inputs

Connect the 4 control inputs (S0-S3) of the 16x1 multiplexer to the corresponding control inputs of MUX1. This step enables the correct routing of data within MUX1 based on the control signals received.

Step 3: Interconnect the Multiplexers

Connect the 3 control inputs (S0-S2) of MUX1 to the corresponding control inputs of MUX2. This interconnection allows for proper synchronization of control signals between the two multiplexers.

Step 4: Utilize the OR Gate

Connect the output of MUX1 to one input of the OR gate, and the output of MUX2 to the other input of the OR gate. The OR gate combines the outputs from both MUX1 and MUX2 to produce a single output signal.

Step 5: Final Output Connection

Connect the output of the OR gate to the output of the 16x1 multiplexer. This step completes the circuit and allows for the final output signal to be generated by the 16x1 multiplexer.

By following these steps meticulously, you will have successfully implemented a 16x1 multiplexer using two 8x1 multiplexers and one OR gate. This approach optimizes the use of components and ensures the efficient operation of the multiplexer system.

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