3. Additional cards
Today's market offers PC-compatible boards for a multitude of functions.
3.1 Modem cards
They are designed to link computers remotely: when it is impossible to establish a customized cable link, the telephone network is used; to avoid altering the information, the signals are modulated at the start and demodulated at the end by a modulator-demodulator (modem).
Transmission speeds range from 300 to 1,200 baud. Some cards are designed to transmit both data and speech.
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Modem 300/1200 from Tecmar.
Speed: 300 to 1,200 baud.
Transmission: data and speech.
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Case study: psychrometer
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