9 9 votes What is the minimum number of two-input $\text{NAND}$ gates used to perform the function of two-input $\text{OR}$ gate? One Two Three Four Digital Logic isro2017 digital-logic min-no-gates + – Arjun 11.5k views answer comment Share Follow Print See 1 comment 1 1 comment reply papesh commented May 10, 2017 reply Follow flag It is direct question. Ans =3 0 0 replyShare Please log in or register to add a comment.
Best answer 14 14 votes Need only 3 NAND Gate : A+B = ((A + B)')' = ( A' .B' )' Prashant. answered May 10, 2017 • selected May 10, 2017 by ManojK Prashant. comment Share Follow See all 5 Comments 5 5 Comments reply Show 2 previous comments Aditya Vikram Sinha commented May 13, 2017 reply Follow flag In th question it is just asked minimum no. of NAND Gates....It is not said that we are bound to use only NAND gates. 0 0 replyShare Prashant. commented May 13, 2017 reply Follow flag ok thankyou :) 0 0 replyShare shriverdhan commented Feb 13, 2025 reply Follow flag @Aditya Vikram Sinha you yourself proved your statement wrong XD 0 0 replyShare Please log in or register to add a comment.
6 6 votes by using NAND by using NOR NOT 1 1 OR 3 2 AND 2 3 NAND - 4 NOR 4 - EX-OR 4 5 EX-NOR 5 4 so by using 3 NAND gate we can perform OR gate operation pawan kumarln answered May 10, 2017 • edited May 10, 2017 by pawan kumarln pawan kumarln comment Share Follow See 1 comment 1 1 comment reply Sahil1994 commented Dec 8, 2017 reply Follow flag @pawan KumarIn Sir, if we have gates with different fan-in and fan-out. will this table be same....? This table is standard for 2 fan-in and 2 fan-out...? 0 0 replyShare Please log in or register to add a comment.
3 3 votes Gate Min NAND MIn NOR AND 2 3 OR 3 2 NAND 1 4 NOR 4 1 EX-OR 4 5 EX-NOR 5 4 For NOT gate only 1 NAND & NOR gate are enough to realize. & IF from 2 Input NAND gate we want to realize n-input NAND gate then it will be 2n-3. POOJAN SHAH answered Aug 24, 2017 POOJAN SHAH comment Share Follow 0 reply Please log in or register to add a comment.
0 0 votes 3 nand gates for or and 2 for and. Purvi Agrawal answered May 10, 2017 Purvi Agrawal comment Share Follow 0 reply Please log in or register to add a comment.
