There are three types of modems.
DIRECT CONNECT:
Which are linked to the computer by cable and the Rs.232 point and plus in to a standard telephone socket.
INTERNAL:
Which are built in to the computer and have backup capabilities.
Sales of micro-computers which contain internal, board-mounted modems are increasing rapidly. Alternatively, there are add-on modem cards that can be fitted inside the computer.
ACOUSTIC COUPLER:
A cheap, low-speed modem where the user places the telephone handset in to the cradle of the coupler.
20:38:00
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first year computer science
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