OPERATOR LOGIKA DASAR


1. Pengertian Operator Logika

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πŸ“– Deskripsi

Operator logika adalah simbol atau kata yang digunakan untuk menghubungkan atau memodifikasi proposisi sehingga menghasilkan nilai kebenaran baru.

🧠 Narasi Penjelasan

Operator logika merupakan inti dalam logika informatika karena:

  • Menghubungkan beberapa pernyataan
  • Menentukan hasil logika
  • Digunakan dalam pemrograman

πŸ‘‰ Contoh: AND, OR, NOT.


2. Jenis Operator Logika Dasar

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πŸ“– Deskripsi

Operator logika dasar terdiri dari beberapa jenis utama.

🧠 Narasi Penjelasan

πŸ“Š Tabel Operator:

OperatorSimbolNama
AND∧Konjungsi
OR∨Disjungsi
NOT¬Negasi
XORβŠ•Exclusive OR

πŸ‘‰ Setiap operator memiliki aturan berbeda.


3. Operator AND (Konjungsi)

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πŸ“– Deskripsi

Operator AND menghasilkan nilai benar jika kedua pernyataan benar.

🧠 Narasi Penjelasan

Contoh:

  • p: β€œHari hujan”
  • q: β€œSaya membawa payung”
  • p ∧ q β†’ benar jika keduanya benar

πŸ“Š Tabel Kebenaran:

pqp ∧ q
TTT
TFF
FTF
FFF

πŸ‘‰ AND = semua harus benar.


4. Operator OR (Disjungsi)

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πŸ“– Deskripsi

Operator OR menghasilkan benar jika salah satu benar.

🧠 Narasi Penjelasan

πŸ“Š Tabel Kebenaran:

pqp ∨ q
TTT
TFT
FTT
FFF

πŸ‘‰ OR = minimal satu benar.


5. Operator NOT (Negasi)

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πŸ“– Deskripsi

Operator NOT membalik nilai kebenaran.

🧠 Narasi Penjelasan

πŸ“Š Tabel Kebenaran:

p¬p
TF
FT

πŸ‘‰ NOT = kebalikan.


6. Operator XOR (Exclusive OR)

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πŸ“– Deskripsi

Operator XOR benar jika hanya satu yang benar.

🧠 Narasi Penjelasan

πŸ“Š Tabel Kebenaran:

pqp βŠ• q
TTF
TFT
FTT
FFF

πŸ‘‰ XOR = berbeda.


7. Prioritas Operator Logika

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πŸ“– Deskripsi

Operator memiliki urutan pengerjaan.

🧠 Narasi Penjelasan

πŸ“Š Urutan:

  1. NOT
  2. AND
  3. OR

πŸ‘‰ Sama seperti matematika.


8. Kombinasi Operator Logika

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πŸ“– Deskripsi

Operator dapat digabungkan.

🧠 Narasi Penjelasan

Contoh:

  • (p ∧ q) ∨ Β¬r

πŸ‘‰ Digunakan dalam program kompleks.


9. Operator Logika dalam Pemrograman

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πŸ“– Deskripsi

Digunakan dalam bahasa pemrograman.

🧠 Narasi Penjelasan

Contoh:

  • AND β†’ &&
  • OR β†’ ||
  • NOT β†’ !

πŸ‘‰ Digunakan dalam kondisi program.


10. Perbandingan Operator Logika

πŸ“Š Tabel Ringkasan

OperatorArtiKunci
ANDSemua benarKetat
ORSalah satu benarFleksibel
NOTKebalikanNegasi
XORBerbedaEksklusif

11. Kesalahan Umum

πŸ“– Deskripsi

Kesalahan dalam penggunaan operator.

🧠 Narasi Penjelasan

  • Salah prioritas
  • Salah tabel kebenaran
  • Salah interpretasi

12. Aplikasi dalam Kehidupan

πŸ“– Deskripsi

Digunakan dalam sistem sehari-hari.

🧠 Narasi Penjelasan

Contoh:

  • Login (username AND password)
  • Alarm (sensor OR sensor)

13. Manfaat Memahami Operator Logika

πŸ“– Deskripsi

Penting untuk mahasiswa informatika.

🧠 Narasi Penjelasan

  • Dasar coding
  • Analisis sistem
  • Problem solving

14. Ringkasan Materi

πŸ“– Deskripsi

Inti materi.

🧠 Narasi Penjelasan

  • Operator logika menghubungkan proposisi
  • Ada AND, OR, NOT, XOR
  • Digunakan dalam pemrograman

15. Kesimpulan

  • Operator logika adalah dasar logika informatika
  • Menentukan hasil keputusan
  • Digunakan dalam semua program komputer

🎯 Latihan / Diskusi

  1. Jelaskan perbedaan AND dan OR!
  2. Apa fungsi NOT?
  3. Buat tabel kebenaran XOR!

πŸ“ Tugas

  • Buat 3 contoh ekspresi logika
  • Hitung hasilnya
  • Terapkan dalam kode sederhana