GERBANG LOGIKA
Macam – macam gerbang logika :
1. Gerbang AND (A.B)
“output akan bernilai ‘1’ jika kedua inputnya ‘1’ “
Table kebenaran(truth table)
A | B | Q |
0 | 0 | 0 |
0 | 1 | 0 |
1 | 0 | 0 |
1 | 1 | 1 |
2. Gerbang OR (A+B)
“output akan berbilai ‘1’ jika salah satu inputnya bernilai ‘1’ “
Tabel kebenaran
A | B | Q |
0 | 0 | 0 |
0 | 1 | 1 |
1 | 0 | 1 |
1 | 1 | 1 |
3. Gerbang NOT (Inverter) (Ā)
“output akan selalu berlawanan dngan inputnya”
Table kebenaran
A | Q |
0 | 1 |
1 | 0 |
4. Gerbang NAND (NOT AND) (Ā.B͞)
“outputnya akan bernilai ‘0’ jika kedua inputnya ‘1’ “
Table
A | B | Q |
0 | 0 | 1 |
0 | 1 | 1 |
1 | 0 | 1 |
1 | 1 | 0 |
5. Gerbang NOR (Ā +B͞)
“outpunya akan bernilai ‘1’ jika kedua inputnya bernilai ‘0’ “
Table
A | B | A+B |
0 | 0 | 1 |
0 | 1 | 0 |
1 | 0 | 0 |
1 | 1 | 0 |
6. Gerbang XOR (Exclusive OR) (Ā.B+A.B͞)
“outputnya akan bernilai ‘1’ jika inputnya berbeda “
Table
A | B | Q |
0 | 0 | 0 |
0 | 1 | 1 |
1 | 0 | 1 |
1 | 1 | 0 |
A | B | Ā | B͞ | Ā.B | A.B͞ | Ā.B+ A.B͞ |
0 | 0 | 1 | 1 | 0 | 0 | 0 |
0 | 1 | 1 | 0 | 1 | 0 | 1 |
1 | 0 | 0 | 1 | 0 | 1 | 1 |
1 | 1 | 0 | 0 | 0 | 0 | 0 |
7. Gerbang XNOR (Exclusive NOR)
 | |||
“ outputnya akan bernilai ‘1’ jika inputnya sama “
Table
A | B | Q |
0 | 0 | 1 |
0 | 1 | 0 |
1 | 0 | 0 |
1 | 1 | 1 |
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