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MODUL • Fizik TINGKATAN 5



                           Get Logik
                   4.4     Logic Gates


                      Terminologi                                         Penerangan
                      Terminology                                         Explanation

                 Get logik              Satu litar elektronik yang mempunyai satu input atau lebih dan satu output.
                 Logic gate             An electronic circuit with one or more inputs and a single output.

                 Jadual kebenaran       Jadual yang menyenaraikan semua kemungkinan input dan output get logik.
                 Truth table            A table that summarises all the possible inputs and outputs of a logic gate.

                 Algebra Boolean        Ungkapan Boolean ialah suatu bentuk ungkapan yang boleh meringkaskan operasi logik suatu get
                 Boolean algebra        logik.
                                        The Boolean algebra is one form of expression which can be used to summarise the logic operation of a
                                        logic gate.



               1  Setiap input dan output boleh sama ada tinggi (logik 1) atau rendah (logik 0).
                  Each input and output can be either high (logic 1) or low (logic 0)

               2  Sistem binari "0" mewakili 0 V dan binari "1" mewakili voltan bukan sifar.
                  A binary "0" represents 0 V, and a binary "1" represents a non-zero voltage.

               3  Analogi bagi get-get logik
                  Analogy for logic gate:





                (a)  Get TAK / NOT gate                  Jadual kebenaran:
                                                         Truth table:
                                                                                 A           X                                                                                                                                                           UNIT 4

         UNIT 4
                      A                     X                                    0           1
                                                                                 1           0
                                 X = A                                    menyonsangkan
                             Simbol get TAK             Get TAK sentiasa                  keadaan binari input
                          The symbol of NOT gate        NOT gate always   inverse    the binary state of the input

                       Litar Analogi / Analogical circuit   Keadaan suis   Keadaan mentol             Sebab
                                                          Condition of switch  Condition of bulb     Reason
                                                                                           Litar lengkap, arus mengalir
                                                         Buka (0)         Nyala (1)        melalui mentol
                                                         Open (0)         Lights up (1)    The circuit is complete, current
                    6 V                                                                    flows through the bulb

                                                                                           Litar pintas, arus tidak mengalir
                   60 Ω                                       Tutup (1)        Padam (0)   melalui mentol
                                                              Close (1)         Off (0)    Short circuit, current does not flow
                                                                                           through the bulb












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