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Semiconductor Electronics: Materials, Devices And Simple Circuits

Question
CBSEENPH12047858

Which logic gate is represented by the following combination of logic gates?

       

  • OR

  • NOR

  • AND

  • NAND

Solution

C.

AND

             

               Output of gate 1, Y1A¯                

               Output of gate 2, Y2B¯

                Outout of gate 3

                  Y = Y1 + Y2¯

                 Y = A¯ +B¯¯

                 Y  =A¯¯ × B¯¯

                 Y = AB

  Which the output of AND gate. 

An AND gate has two or more inputs and one output. The output Y of AND gate is 1 only when input A and input B are both 1.