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                  NPP               Number System, Boolean Algebra and Logic Circuits              255



                                         A

                                         B                                     F
                                         c

                      One NOT gate and bubbled OR Gate can        NOT JoQ> VWm ~~ëS> OR Ho$ ñWmZ na NAND
                  be replaced with NAND:                      ~ZmZo na…



                                    A

                                                                                    F
                                   B

                                   c



                  (ii) NOR-NOR Implementation: Use  POS       (ii) NOR Bpåßb_|Q>oeZ hoVw  gd©àW_  POS ê$n H$m
                      Form:   F =  . B  (A +  C )  Basic gate imple-  _yb^yV n[anW ~ZmVo h¢…
                      mentation is:

                                          B

                                          A                                   F

                                          C

                      Convert OR into NOR and put one bubble      OR H$mo NOR _| VWm AND H$mo ~~ëS> AND _|
                  at AND gate input. To get bubbled AND put   ~XbZo na…
                  one more bubble and one NOT gate in series.


                                          B

                                          A                                   F

                                          C

                      Bubbled AND and three NOT gates can be      ~~ëS> AND d NOT Ho$ ñWmZ na NOR JoQ> ~ZmZo
                  replaced by NOR:                            na…
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