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GERBANG LOGIKA DASAR
        Gerbang logika merupakan dasar pembentukan sistem digital. Gerbang logika
beroperasi dengan bilangan biner, sehingga disebut juga gerbang logika biner.
Tegangan yang digunakan dalam gerbang logika adalah TINGGI atau RENDAH. Tegangan
tinggi berarti 1, sedangkan tegangan rendah berarti 0.

1. Gerbang AND
      Gerbang AND digunakan untuk menghasilkan logika 1 jika semua masukan
mempunyai logika 1, jika tidak maka akan dihasilkan logika 0.

                   A
                                                F

                   B

                   Gambar Gerbang Logika AND

                       Masukan   Keluaran
                       A    B       Y
                       0    0       0
                       0    1       0
                       1    0       0
                       1    1       1

                   Tabel Kebenaran AND

      Pernyataan Boolean untuk Gerbang AND
               A . B = Y (A and B sama dengan Y )

2. Gerbang NAND (Not AND)
       Gerbang NAND akan mempunyai keluaran 0 bila semua masukan pada logika 1.
sebaliknya jika ada sebuah logika 0 pada sembarang masukan pada gerbang NAND, maka
keluaran akan bernilai 1.


                       A
                                               F

                       B

                   Gambar Gerbang Logika NAND

                       Masukan   Keluaran
                       A    B       Y
                       0    0       1
                       0    1       1
                       1    0       1
                       1    1       0

                   Tabel Kebenaran NAND
3. Gerbang OR
      Gerbang OR akan memberikan keluaran 1 jika salah satu dari masukannya pada
keadaan 1. jika diinginkan keluaran bernilai 0, maka semua masukan harus dalam keadaan 0.

                          A
                                                        F

                          B

                         Gambar Gerbang Logika OR

                       Masukan     Keluaran
                       A    B         Y
                       0    0         0
                       0    1         1
                       1    0         1
                       1    1         1

                      Tabel Kebenaran OR

4. Gerbang NOR
      Gerbang NOR akan memberikan keluaran 0 jika salah satu dari masukannya pada
keadaan 1. jika diinginkan keluaran bernilai 1, maka semua masukannya harus dalam keadaan
0.


                          A
                                                               Y
                          B

                         Gambar Gerbang Logika NOR

                       Masukan     Keluaran
                       A    B         Y
                       0    0         1
                       0    1         0
                       1    0         0
                       1    1         0

                      Tabel Kebenaran NOR
5. Gerbang XOR
      Gerbang XOR (dari kata exclusive OR) akan memberikan keluaran 1 jika masukan-
masukannya mempunyai keadaan yang berbeda.


                        A
                                                           Y
                        B

                      Gambar Gerbang Logika XOR

                     Masukan     Keluaran
                     A    B         F
                     0    0         0
                     0    1         1
                     1    0         1
                     1    1         0

                    Tabel Kebenaran XOR

6. Gerbang NOT

Gerbang NOT adalah gerbang yang mempunyai sebuah input dan sebuah output.
Gerbang NOT berfungsi sebagai pembalik (inverter), sehingga output dari gerbang ini
merupakan kebalikan dari inputnya.




                       Gambar. Lambang Gerbang Logika NOT

                            Masukan   Keluaran
                              A          F
                              0          1
                              1          0

                            Tabel Kebenaran Gerbang NOT
This document was created with Win2PDF available at http://www.daneprairie.com.
The unregistered version of Win2PDF is for evaluation or non-commercial use only.

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Gerbang logika

  • 1. GERBANG LOGIKA DASAR Gerbang logika merupakan dasar pembentukan sistem digital. Gerbang logika beroperasi dengan bilangan biner, sehingga disebut juga gerbang logika biner. Tegangan yang digunakan dalam gerbang logika adalah TINGGI atau RENDAH. Tegangan tinggi berarti 1, sedangkan tegangan rendah berarti 0. 1. Gerbang AND Gerbang AND digunakan untuk menghasilkan logika 1 jika semua masukan mempunyai logika 1, jika tidak maka akan dihasilkan logika 0. A F B Gambar Gerbang Logika AND Masukan Keluaran A B Y 0 0 0 0 1 0 1 0 0 1 1 1 Tabel Kebenaran AND Pernyataan Boolean untuk Gerbang AND A . B = Y (A and B sama dengan Y ) 2. Gerbang NAND (Not AND) Gerbang NAND akan mempunyai keluaran 0 bila semua masukan pada logika 1. sebaliknya jika ada sebuah logika 0 pada sembarang masukan pada gerbang NAND, maka keluaran akan bernilai 1. A F B Gambar Gerbang Logika NAND Masukan Keluaran A B Y 0 0 1 0 1 1 1 0 1 1 1 0 Tabel Kebenaran NAND
  • 2. 3. Gerbang OR Gerbang OR akan memberikan keluaran 1 jika salah satu dari masukannya pada keadaan 1. jika diinginkan keluaran bernilai 0, maka semua masukan harus dalam keadaan 0. A F B Gambar Gerbang Logika OR Masukan Keluaran A B Y 0 0 0 0 1 1 1 0 1 1 1 1 Tabel Kebenaran OR 4. Gerbang NOR Gerbang NOR akan memberikan keluaran 0 jika salah satu dari masukannya pada keadaan 1. jika diinginkan keluaran bernilai 1, maka semua masukannya harus dalam keadaan 0. A Y B Gambar Gerbang Logika NOR Masukan Keluaran A B Y 0 0 1 0 1 0 1 0 0 1 1 0 Tabel Kebenaran NOR
  • 3. 5. Gerbang XOR Gerbang XOR (dari kata exclusive OR) akan memberikan keluaran 1 jika masukan- masukannya mempunyai keadaan yang berbeda. A Y B Gambar Gerbang Logika XOR Masukan Keluaran A B F 0 0 0 0 1 1 1 0 1 1 1 0 Tabel Kebenaran XOR 6. Gerbang NOT Gerbang NOT adalah gerbang yang mempunyai sebuah input dan sebuah output. Gerbang NOT berfungsi sebagai pembalik (inverter), sehingga output dari gerbang ini merupakan kebalikan dari inputnya. Gambar. Lambang Gerbang Logika NOT Masukan Keluaran A F 0 1 1 0 Tabel Kebenaran Gerbang NOT
  • 4. This document was created with Win2PDF available at http://www.daneprairie.com. The unregistered version of Win2PDF is for evaluation or non-commercial use only.