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| Physical TypesThere are three physical types of modems:
| External which plugs into a serial port on the back of the computer
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| | Advantages:
| - Can be moved to a different computer easily.
- Does not take up a slot inside the computer.
- Lights on front are visible to show what the modem is doing.
| | Disadvantages:
| - Takes up deskspace.
- Adds more cables to the tangle.
| | | Internal
where the phone line plugs directly into card through the back of the computer
| Advantages:
| - Saves deskspace.
- Saves a cable.
| | Disadvantages:
| - Requires an internal peripheral slot. (They get filled up.)
- Must use software display to see the lights that show what the modem is doing.
| | 
| | Acoustical
(Very old) The telephone handset is placed into the device, which is connected to the computer. Not many of these around any more.You have to have an old-style telephone, too.
| Advantages:
| - Can use a phone without having to move the phone wire.
| | Disadvantages:
| - Bulky
- Connection much more prone to static and interference.
- Only a standard handset will fit.
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Date: 2015-01-11; view: 1191
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