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                  NPP               Number System, Boolean Algebra and Logic Circuits              219


                      It contains four minterms of four variables  Mma _| {_ÝQ>_© h¡ Omo {ZåZmZwgma g§»`mAm| go g§~Õ
                  which corresponds to as follows:
                                                              h¡…
                                                               →
                                                        4        0100
                                                        2  →      0010
                                                              
                                                        9   →     1001
                                                              
                                                       15   →     1111
                                                               
                      Filling four 1’s for the above values we get  Cnamoº$ _mZm| hoVw 1 VWm AÝ` hoVw 0 {bIZo na …
                  the Karnaugh map:
                                                PQ   R Z  00  01   11     10


                                                 00    0     0      0     1


                                                 01    1     0      0     0


                                                 11    0     0      1     0


                                                 10    0     1      0     0

                      (c) The given expression is Y= πM(1, 6, 7)  (c) Y= πM(1, 6, 7) ì`§OH$ _| VrZ _oŠgQ>_© h¢ Omo
                  The expression contains three Maxterms which  {ZåZmZwgma g§»`mAm| go g§~Õ h¡…
                  corresponds to  the input combinations  as fol-
                  lows:

                                                        1   →  001
                                                         6  →  110

                                                         7  →  111
                      The Karnaugh map will contain 0’s for the   BZHo$ ñWmZm| na 0 VWm ~mH$s g^r ñWmZm| na 1
                  maxterms, and it will be drawn as follows:  aIZo na:

                                                 A  B C  00  01    11    10



                                                 0    1      0     1      1


                                                 1    1      1     0      0
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