1 votes 1 votes which is correct? S1 +ve logic AND operation behaves as -ve logic OR operation. S2 fxn f(A,B,C)= AB+BC+CA is a self dual fxn. S2 is true but what is the explanation of S1, what does statement 1 want to say? Digital Logic digital-logic + – jugnu1337 asked Jul 9, 2022 jugnu1337 352 views answer comment Share Follow See all 4 Comments See all 4 4 Comments reply Shoto commented Jul 9, 2022 reply Follow Share In positive logic: high voltage is logic 1, low voltage is logic 0 In negative logic: high voltage is logic 0, low voltage is logic 1 Now try to think about this. 0 votes 0 votes jugnu1337 commented Jul 9, 2022 reply Follow Share so according to this definition s1 is false? 1 votes 1 votes Shoto commented Jul 9, 2022 reply Follow Share Why?Consider positive logic:aba.b000010100111 aba+b000011101111Complement OR truth table we will get negative logic OR operationaba+b111100010000This truth table is same as positive logic AND operation So S1 is true. 2 votes 2 votes jugnu1337 commented Jul 9, 2022 reply Follow Share got it..thanks m last step me mistake kr ra tha.. 2 votes 2 votes Please log in or register to add a comment.
1 votes 1 votes AND Gate Truth Table : A B A.B High High High High Low Low Low High Low Low Low Low This table interpreted in +ive logic gives: High → 1 and Low → 0 A B A.B 1 1 1 1 0 0 0 1 0 0 0 0 If the 1st table is interpreted in -ive logic then: High → 0 and Low → 1 A B A.B 0 0 0 0 1 1 1 0 1 1 1 1 In above table A.B is 0 only when A and B both are 0 which is property of OR gate. Hence from above table we can conclude that AND gate in -ive logic system acts as OR gate. tanBit answered Jul 12, 2022 tanBit comment Share Follow See all 0 reply Please log in or register to add a comment.