Computer Hard Ware
Shared PCI/ISA Slot
Notice that the modem has its own speaker. When you connect to the internet and hear the modem dialing, it is this speaker that you hear the sound coming from. Modems are what convert our computer's digital data, into analog waves, so that the data can travel through the phone lines to another computer. The other computer's modem then converts the analog waves back into digital data, so the other computer can understand it.
Modems are rated by how many bits per second they can transmit and receive data. Just because a modem is rated at 56K (56,000 bits per second), does not necessarily mean that it will be able to send and receive at this speed. Phone lines and your internet provider also play a big part in how fast your computer can receive and send information via the internet. Many, if not most, phone lines are only capable of transmitting at 28.8k. For this reason, even though most internet providers offer a 56K connection, your only going to be able to access this service at 28.8k, if your phone lines limit your connection speed. Below is a picture of a PCI modem.
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