Gerbang Logika
Gerbang logika adalah dasar pembentuk dalam sistem digital yang gerbang logika tersebut beroperasi dalam bilangan biner atau logika biner ( 0 dan 1).
Pada sistem digital hanya terdapat tiga buah gerbang logika dasar, yakni :
1. Gerbang logika AND
2. Gerbang logika OR, dan
3. Gerbang logika NOT (inverter)
3. XOR, dan
4. XNOR
Berikutnya yuk lihat rangkaian internal beberapa IC, di antaranya IC : 7400,7403, 7437, 7408, 7409, 7432, dan 7402.
2. Gerbang logika OR, dan
3. Gerbang logika NOT (inverter)
Adapun gerbang logika bentukan, yakni terdiri dari
2. NOR1. NAND
3. XOR, dan
4. XNOR
Masing-masing gerbang logika dapat ditemui dalam suatu kemasan chip yang dikenal IC (Integrated Circuit).
Mari kita lihat dibawah ini akan ditunjukan tabel kebenaran pada masing-masing gerbang logika.
Logika AND | ||
A | B | Hasil |
0 | 0 | 0 |
0 | 1 | 0 |
1 | 0 | 0 |
1 | 1 | 1 |
Logika OR | ||
A | B | Hasil |
0 | 0 | 0 |
0 | 1 | 1 |
1 | 0 | 1 |
1 | 1 | 1 |
Logika NOT | |
A | Hasil |
1 | 0 |
0 | 1 |
Logika NAND | ||
A | B | Hasil |
0 | 0 | 1 |
0 | 1 | 1 |
1 | 0 | 1 |
1 | 1 | 0 |
Logika NOR | ||
A | B | Hasil |
0 | 0 | 1 |
0 | 1 | 0 |
1 | 0 | 0 |
1 | 1 | 0 |
Logika XOR | ||
A | B | Hasil |
0 | 0 | 0 |
0 | 1 | 1 |
1 | 0 | 1 |
1 | 1 | 0 |
Logika XNOR | ||
A | B | Hasil |
0 | 0 | 1 |
0 | 1 | 0 |
1 | 0 | 0 |
1 | 1 | 1 |
Berikutnya yuk lihat rangkaian internal beberapa IC, di antaranya IC : 7400,7403, 7437, 7408, 7409, 7432, dan 7402.
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