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Modems and NIC cards

Modems and NIC cards. Connecting YOU to the World. Communicating with other Computers. There are two ways computers can communicate with each other. Modems Internal External NIC cards. Modem. Acronym for Modulator Demodulator.

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Modems and NIC cards

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  1. Modems and NIC cards Connecting YOU to the World

  2. Communicating with other Computers • There are two ways computers can communicate with each other. • Modems • Internal • External • NIC cards

  3. Modem • Acronym for Modulator Demodulator. • Converts data from digital computer signals to analog signals. (modulation) • Converts analog signals back into digital data. (demodulation)

  4. Analog and DigitalSignals

  5. Internal Modem

  6. External Modem

  7. Basic Hayes Modem AT strings • AT commands can be used to specify settings. • Use the ATZ command to reset the modem back to default factory settings. • The majority of these commands are ran from either a MS-DOS window or hyper terminal. (Example): A - Instructs the modem to attempt to answer a call.

  8. Network Interface CardNIC

  9. Network Interface CardNIC • A board that provides network communication capabilities to and from a computer system. • Also called an adapter. • Most common type is an Ethernet card.

  10. Expansion Slot Types • ISA - used by older and/or slower devices. ( Usually black.) • PCI - used for high-speed input/output devices. ( Usually white.) • Both slots are located on the mother board in the expansion slot area.

  11. Connectivity • Diagram of a NIC card for connection of a computer to an Ethernet Network

  12. URL’s • http.//www.modems.com/glossary/glos16.html (good definitions about expansion slots) • http.//www.askjeeves.com (found many sights with pictures) • http.//www.howstuffworks.com ( much more indepth then I wanted)

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