# How to make 16* 1 MUX using 4* 1?

## How to make 16* 1 MUX using 4* 1?

Lets take the inputs to the 16:1 MUX to be numbered 1:16. Now give inputs 1–4 to a, 5–8 to b, 9–12 to c and 13–16 to d. Connect the outputs of all the MUXes to the input of another 4:1 MUX with C and D as select lines. Voila your 16:1 MUX is implemented using 4:1 MUX.

How do you make a 4 1 mux in VHDL?

Another Method of Constructing VHDL 4 to 1 mux is by using 2 to 1 Mux. For that implementation first we have write VHDL Code for 2 to 1 Mux and Port map 3 times 2 to 1 mux to construct VHDL 4 to 1 Mux.

### How many 2 1 multiplexers are required to construct the 4 1 multiplexers?

Three(3) ​2 : 1 MUX are required to implement 4 : 1 MUX.

How do you implement a 4×1 MUX?

4×1 Multiplexer has four data inputs I3, I2, I1 & I0, two selection lines s1 & s0 and one output Y. The block diagram of 4×1 Multiplexer is shown in the following figure. One of these 4 inputs will be connected to the output based on the combination of inputs present at these two selection lines.

#### How many 4x MUXS are needed for 128 1 MUX?

You can, of course, use larger multiplexers to reduce the number of components, but the principle is the same. We require 170 4:1 Multiplexers and an OR gate to generate a 512:1 Multiplexer. This is found just by divideing 512 by 4 and just adding the quotients… 512/4 = 128.

What is 4×1 multiplexer?

## What are the types of multiplexer implement a 16 1 multiplexer using 4 1 multiplexer?

The basis: See it this way: You need a combinational logic with 16 input pins, 4 select lines and one output. In a 4:1 mux, you have 4 input pins, two select lines and one output. So, at the least you have to use 4 4:1 MUX, to obtain 16 input lines. But you’d then have a logic with 4 output pins.

What is mux in VHDL?

A multiplexer allows digital signals from several sources to be routed onto a single bus or line. A ‘select’ input to the multiplexer allows the source of the signal to be chosen.

### Can we design a 4×1 mux with two 2×1 multiplexers?

Yes, it can, as in post #2. Otherwise one channel on each will always be on.

Which of the following options are correct for a 4×1 multiplexer?

Which of the following options are correct for a 4×1 multiplexer? Explanation: A 4 x 1 multiplexer has 2 select lines, 4 input lines, and 1 output line. AND gates are required to pass the inputs. Thus 4 AND gates will be used for each input.

#### How many 1 to 4 Line demux are required to construct a 1 to 64 line Demux?

Therefore, for 1:4 demultiplexer, 2 select lines are required. Explanation: A demultiplexer sends a single input to multiple outputs, depending on the select lines.