RANGKAIAN PADA LAMPU LALU LINTAS
Pada rangkaian ini kita menggunakan 4 input yaitu input A,B,C,dan D. Karena kita menggunakan 4 input maka 24 = 16, jadi kita akan mendapatkan 16 data. Lampu akan menyala jika niali Q telah diset bernilai 1. Lama lampunya menyala tergantung pada banyak data yang kita gunakan, disini untuk lampu Hijau saya meggunakan 6 data dari data awal. Kuning 2 data dan Merah 8 data.
Tabel kebenaran: jika lampu Hijau yang menyala (H2)
| A | B | C | D | Q |
| 0 | 0 | 0 | 0 | 1 = A’B’C’D’ |
| 0 | 0 | 0 | 1 | 1 = A’B’C’D |
| 0 | 0 | 1 | 0 | 1 = A’B’CD’ |
| 0 | 0 | 1 | 1 | 1 = A’B’CD |
| 0 | 1 | 0 | 0 | 1 = A’BC’D’ |
| 0 | 1 | 0 | 1 | 1 = A’BC’D |
H2 = A’B’C’D’+A’B’C’D+A’B’CD’+A’B’CD+A’BC’D’+A’BC’D
= A’B’C’(D’+D)+A’B’C(D+D’)+A’BC’(D+D’)
= A’B’C’+A’B’C+A’BC’
= A’B’(C’+C)+A’BC’
= A’B’+A’BC’
= A’B’ + A’C’
Gambar rangkaian
Tabel kebenaran : jika lampu Kuning yang menyala (
| A | B | C | D | Q |
| 0 | 1 | 1 | 0 | 1 = A’BCD’ |
| 0 | 1 | 1 | 1 | 1 = A’BCD |
= A’BC(D’+D)
= A’BC
Gambaar rangkaian
Tabel kebenaran: jika lampu Merah yang menyala (M2)
| A | B | C | D | Q |
| 1 | 0 | 0 | 0 | 1 = AB’C’D’ |
| 1 | 0 | 0 | 1 | 1 =AB’C’D |
| 1 | 0 | 1 | 0 | 1 =AB’CD’ |
| 1 | 0 | 1 | 1 | 1 =AB’CD |
| 1 | 1 | 0 | 0 | 1 =ABC’D’ |
| 1 | 1 | 0 | 1 | 1 =ABC’D |
| 1 | 1 | 1 | 0 | 1 =ABCD’ |
| 1 | 1 | 1 | 1 | 1 =ABCD |
M2 = AB’C’D’+AB’C’D+AB’CD’+AB’CD+ABC’D’+ABC’D+ABCD’+ABCD
= AB’C’(D’+D)+AB’C(D’+D)+ABC’(D’+D)+ABC(D’+D)
= AB’C’ + AB’C + ABC’ + ABC
=AB’(C’+C)+AB(C’+C)
= AB’+AB
= A
Gambar Rangkaian
Tabel kebenaran: jika Lampu Merah menyala (M1)
| A | B | C | D | Q |
| 0 | 0 | 0 | 0 | 1 =A’B’C’D’ |
| 0 | 0 | 0 | 1 | 1 =A’B’C’D |
| 0 | 0 | 1 | 0 | 1 =A’B’CD’ |
| 0 | 0 | 1 | 1 | 1 =A’B’CD |
| 0 | 1 | 0 | 0 | 1 =A’BC’D’ |
| 0 | 1 | 0 | 1 | 1 =A’BC’D |
| 0 | 1 | 1 | 0 | 1 =A’BCD’ |
| 0 | 1 | 1 | 1 | 1 =A’BCD |
M1 =A’B’C’D’+A’B’C’D+A’B’CD’+A’B’CD+A’BC’D’+A’BC’D+A’BCD’+A’BCD
=A’B’C’(D’+D)+A’B’C(D’+D)+A’BC’(D’+D)+A’BC(D’+D)
=A’B’C’+A’B’C+A’BC’+A’BC
=A’B’(C’+C)+A’B(C’+C)
=A’
Gambar rangkaian
Tabel kebenaran: jika lampu Hijau menyala (H1)
| A | B | C | D | Q |
| 1 | 0 | 0 | 0 | 1 =AB’C’D’ |
| 1 | 0 | 0 | 1 | 1 =AB’C’D |
| 1 | 0 | 1 | 0 | 1 =AB’CD’ |
| 1 | 0 | 1 | 1 | 1 =AB’CD |
| 1 | 1 | 0 | 0 | 1 =ABC’D’ |
| 1 | 1 | 0 | 1 | 1 =ABC’D |
H1 = AB’C’D’+AB’C’D+AB’CD’+AB’CD+ABC’D’+ABC’D
= AB’C’(D’+D)+AB’C(D+D’)+ABC’(D’+D)
= AB’C+AB’C+ABC’
= AB’+AC’
Gambar Rangkaian
Tabel kebenaran: jika lampu Kuning menyala (K1)
| A | B | C | D | Q |
| 1 | 1 | 1 | 0 | 1 =ABCD’ |
| 1 | 1 | 1 | 1 | 1 =ABCD |
K1 = ABCD’+ABCD
= ABC(D’+D)
= ABC
Gambar rangkaian
