ATM (Automated teller machine)

Chia sẻ: Van Kent Kent | Ngày: | Loại File: PDF | Số trang:75

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ATM (Automated teller machine)

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Synchronous Mode Synchronous systems negotiate the connection at the data-link level before communication begins Basic synchronous systems will begins. synchronize two clocks before transmission. Asynchronous mode Asynchronous systems do not send separate information to indicate the encoding or clocking information. The receiver must decide the clocking of the signal on it's own. This means that the receiver must decide where to look in the signal stream to find ones and zeroes.

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