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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
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
Collection of modems once used in Australia, including dial-up, DSL, and cable modems
TeleGuide terminal
TeleGuide terminal
The original 300-baud Hayes Smartmodem
The original 300-baud Hayes Smartmodem
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PDP-11 CPU board
PDP-11 CPU board
Inside a custom-built computer: power supply at the bottom has its own cooling fan
Inside a custom-built computer: power supply at the bottom has its own cooling fan
Computer motherboard
Computer motherboard
An IBM System z9 mainframe
An IBM System z9 mainframe