2 votes 2 votes How many nand gate are needed to make 4x1 multiplexer...? Digital Logic digital-logic + – Sanjay Sharma asked Jun 16, 2016 • recategorized Jun 16, 2016 by LeenSharma Sanjay Sharma 15.5k views answer comment Share Follow See all 2 Comments See all 2 2 Comments reply Praveen Saini commented Jun 16, 2016 reply Follow Share 4 x 1 mux need 4 AND and 1 OR and 2 NOT gates. Replace OR gate with Invert-input NAND , then above circuit will be replace with 2 NOT and 5 NAND , then 2 NANDS for 2 NOT's , then total 7 NAND gates required. 6 votes 6 votes cse7 commented Sep 3, 2016 reply Follow Share output of 4*1 mux is A'B' + A'B + AB' + AB. we can simplify this and we will get 1. so i think we required 0 NAND gate. A'B + AB' + AB A'(B+B) + A(B'+B) = A' + A =1 0 votes 0 votes Please log in or register to add a comment.
Best answer 3 votes 3 votes 4-to-1 Channel Multiplexer sajjan answered Jan 1, 2017 • selected Jan 1, 2017 by Kapil sajjan comment Share Follow See 1 comment See all 1 1 comment reply Kumar Adi commented Jul 31, 2019 reply Follow Share Total 7 NAND gates are required. 1 votes 1 votes Please log in or register to add a comment.