USRobotics
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U.S. Robotics Corporation, often called USR, is a company that produces USRobotics computer modems and related products. Its initial marketing was aimed at bulletin board systems, where its high-speed
USRobotics Courier 2400 Modem with serial cable attached (mid-late 1980s)
U.S. Robotics Sportster 14,400 Fax Modem (1994)
USR Sportster 56k 117102 ISA modem supporting X2 and V.90
U.S. Robotics 22Mbit/s Wireless PC Card (2002)
Modem
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A modulator-demodulator, commonly referred to as a modem, is a computer hardware device that converts data from a digital format into a format suitable for an analog transmission medium such as teleph
USRobotics
…U.S. Robotics Corporation, often called USR, is a company that produces USRobotics computer modems and related products. Its initial marketing was aimed at bulletin board systems, where its high-speed HST protocol made FidoNet transfers much faster…
Acoustic coupler modems used a telephone handset as the audio medium, with the user dialing the desired number and then pressing the handset into the modem to complete the connection. These systems generally operated at a speed of 300 bits per second.
Collection of modems once used in Australia, including dial-up, DSL, and cable modems
A demonstration of AT&T Bell 101 modem in 1958
The original 300-baud Hayes Smartmodem