History of the Computer - Codes for Data Transfer, Part 3 of 3 (vbprofs.com)
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cainfotech(460) 6 years, 2 months ago
These were the backbone of operator communication with the computer, but were also used for remote input of data. A phone line could be used to link a storeman in the warehouse with the main computer using a modem (Modulator-Demodulator) in much the same way you dial-up to your ISP (Internet Service Provider)
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