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BAB VI

BAB VI. GERBANG EX-OR DAN GERBANG EX-NOR. GERBANG EX-OR. TABEL KEBENARAN. Vcc. 13. 14. 12. 11. 9. 8. 10. 1. 2. 3. 4. 5. 6. 7. GND. GERBANG EX-NOR. TABEL KEBENARAN. PARITY GENERATOR/CHECKER. EVEN PARITY

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BAB VI

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  1. BAB VI GERBANG EX-OR DAN GERBANG EX-NOR

  2. GERBANG EX-OR TABEL KEBENARAN

  3. Vcc 13 14 12 11 9 8 10 1 2 3 4 5 6 7 GND GERBANG EX-NOR TABEL KEBENARAN

  4. PARITY GENERATOR/CHECKER • EVEN PARITY Menambahsatu bit pada data sehinggajumlah bit data bernilai 1 menjadigenap • ODD PARITY Menambahsatu bit pada data sehinggajumlah bit data bernilai 1 menjadiganjil • Contoh: Data yang dikirimkan 01012makapadapritasgenap bit paritasbenilai 0 sehinggajumlah bit yang benilai 1 menjadigenap. Sedangkanpadaparitasganjil bit paritasbernilai 1 sehingga bit yang bernilai 1 menjadiganjil.

  5. Tx Rx 0 1 0 1 1 0 1 0 1 1 A B C D A B C D Error indicator Parity Generator Parity Bit Parity Checker Odd Parity Generator / Checker system PARITY GENERATOR/CHECKER

  6. Parity Generator

  7. PARITY CHECKER • Even Parity Checker

  8. PARITY CHECKER • Odd Parity Checker

  9. PARITY CHECKER • Kelemahan Parity Checker Hanya bisa mendeteksi kesalahan data 1bit saja, jika terjadi 2 bit yang salah tidak terdeteksi.

  10. I0 I1 I2 I3 I4 I5 I6 I7 I8 EO IC Parity Generator/Checker • 74280 74280 8 9 10 1112 13 1 2 4 I0 I1 I2 I3 I4 I5 I6 I7 I8 EO 5 6 Vcc = 14 GND = 7

  11. Contoh Rangkaian

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