1. TYPES OF MODEMS

2. TYPES OF MODEMS There are three types of modems 1. Landline modems
2. Wireless modems
3. LAN modems

3. Landline modems
Depending upon how your computer is configured and your preferences, you can have an external, internal. These work in the same way, but each has its advantages and disadvantages.
1. INTERNAL MODEMS
2. EXTERNAL MODEMS

4. INTERNAL MODEMS
An internal modems is a plug-in circuit board that sits inside the computer. It incorporates the serial port on- board

5. EXTERNAL MODEMS
External modems sit next to the computer and connect to the serial port using a straight- through serial cable.

6. Dial up internet access
Dial-up Internet access is a type of Internet connectivity that operates through a standard telephone line.
Dial-up Internet access is offered through a number of Internet service providers (ISPs).
Subscribers to the ISP normally pay a monthly or yearly fee.
Dial-up service is the least expensive but also the slowest type of Internet access

7. Dial up modem

8. Wireless Modem
A wireless modem is a type of modulator-demodulator which connects to a wireless network instead of using telephone or cable television lines.
Mobile phones, smartphones, data cards and PDAs can be employed as data modems to form a wireless access point connecting a personal computer to the Internet (or some proprietary network)
Almost all current mobile phone models support the Hayes command set, a standard method of controlling modems.

10. PCMCIA MODEMS The association was formed in 1989
Two key elements of the PCMCIA software architecture are Socket Services and Card Services. 
40 million computers, or about 60 percent of all worldwide desktop, notebook, and hand-held computers will have at least one PCMCIA slot

11. There are in fact three types of PCMCIA cards. All three
have the same rectangular size (85.6 by 54 millimeters), but
different widths
Type I cards can be up to 3.3 mm thick, and are used
primarily for adding additional ROM or RAM to a computer.
Type II cards can be up to 5.5 mm thick.
These cards are often used for modem and fax modem cards.
Type III cards can be up to 10.5 mm thick, which is sufficiently
large for portable disk drives.
As with the cards, PCMCIA slots also come in three sizes:
A Type I slot can hold one Type I card
A Type II slot can hold one Type II card or one Type I card
A Type III slot can hold one Type III card or any combination of
two Type I or II cards.

12. PCMCIA MODEMS

13. LAN modems
A LAN modem is a modem that runs on a local area network and is basically a 56k modem with a router and switch built in. These can provide multiple computers with the same connection, but for each computer surfing, the speeds will slow vastly. These modems are generally more secure because they provide each computer with a private IP address.

14. LAN modems