01. materi 1. komunikasi data - pengantar...
TRANSCRIPT
9/15/2009
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• Dua bentuk transmisi digital dan analog mengindikasikan bahwa terdapat dua metodamengindikasikan bahwa terdapat dua metodabit data yang dapat ditransmisikan melaluimedia transmisi.
• Namun dalam wujud proses pengiriman data, dapat dikategorikan ke dalam dua jenistransmisi :transmisi :– Transmisi serial – Transmisi paralel
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• Parallel Transmission, uses multiple parallel d t th t t it lti l bit f d tdata paths to transmit multiple bits of data simultaneously, one bit per path
• Serial Transmission, a communications method that sequences data bits for transmission across a single wire or data path g p
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• Asynchronous transmission add a start bit to th b i i f h b t d t bit tthe beginning of each byte and a stop bit at the end of eight‐bit transmission.The start and stop bit signal the receiving device to recognize each transmission byte so the transmission is decoded accurately
• Synchronous transmission send multiple bytes of data as one transmission without adding start and stop bit to each byte.
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• Simplex : the information flows one way from the computer that generates the display to user –computer that generates the display to user there’s no bidirectional communication with simplex data transmission
• Half‐Duplex transmission allows bidirectional communication between devices, but information flows in only one direction at a time.f y
• Full‐Duplex transmission incorporates advanced communication technologies that allow simultaneous bidirectional communications.
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• Beberapa sistemiwire yang umum
digunakan :– Coaxial
– UTP
– Fibre Opticalp
• Teknologi Gelombang Mikro