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... offers access through an 800 number. Expect to pay from $2 to $12
an hour to use these networks, above each provider's basic charges. The
exact amount depends on the network, time of day and type of modem you use. richmond web space
For more information, contact the above services.
Four other providers deliver Net access to users across the
country:
Delphi, based in Cambridge, Mass., is a richmond web space consumer-oriented network
much like CompuServe or America Online -- only it now offers
subscribers access to Internet services. Delphi charges: $3 a month for
Internet access, in addition to standard charges. These are $10 a month
for four hours of off-peak (non-working hours) access a month and $4 an
hour for each additional hour or $20 for 20 hours of access a month and
$1.80 an hour for each additional hour. For more information, call (800)
695-4005.
BIX (the Byte Information Exchange) offers FTP, Telnet richmond web space and e-mail
access to the Internet as part of their basic service. Owned by the same
company as Delphi, it also offers 20 hours of access a month for $20.
For more information, call (800) 695-4775.
PSI, based in Reston, Va., provides nationwide access to Internet
services through scores of local dial-in numbers to owners of IBM and design richmond
compatible computers. PSILink. which includes access to e-mail, richmond web mail
Usenet and ftp, costs $29 a month, plus a one-time $19 registration
fee.
Special software is required, but is available free from PSI.
PSI's Global Dialup Service provides access to telnet for $39 a month
plus a one-time $39 set-up fee. For more information, call (800)
82PSI82 or (703) 620-6651.
NovX Systems Integration, based in Seattle, Washington, offers full
Internet access through an 800 number reachable across the United States.
There is a $24.95 setup fee, in addition to a monthly fee of $19.95 and a
$10.5 hourly charge. For more information, call (206) 447-0800.
1.5 NET ORIGINS
In the 1960s, researchers began experimenting with linking computers
to each other and to people through telephone hook-ups, using funds from
the U.S Defense Department's Advanced Research Projects Agency (ARPA).
ARPA wanted to see if computers in different locations could be
linked using a new technology known as packet switching. This technology,
in which data meant for another location is broken up into richmond web space little pieces,
each with its own "forwarding address" had the promise of letting several
users share just one communications line.
Just as important, from ARPA's
viewpoint, was that this allowed for creation of networks that could
automatically route data around downed circuits or computers.
ARPA's
goal was not the creation of today's international computer-using
community, but development of a data network that could survive a nuclear
attack.
Previous computer networking efforts had required a line between
each computer on the network, sort of like a one-track train route. The
packet system allowed for creation of a data highway, in which large
numbers of vehicles could essentially share the same lane. Each packet
was given the computer equivalent of a map and a time stamp, so that it
could be sent to the right destination, where it would then be
reassembled into a message the computer or a human could use.
This system allowed computers to share data and the researchers to
exchange electronic mail, or e-mail. In itself, e-mail was something
of a revolution, offering the ability to send detailed letters at the
speed of a phone call.
As this system, known as ARPANet, grew, some enterprising college
students (and one in high school) developed a way to use it to conduct
online conferences.
These started as science-oriented discussions, but
they soon branched out into virtually every other field, as people
recognized the power of being able to "talk" to web advertising richmond hundreds, or even
thousands, of people around the country.
In the 1970s, ARPA helped support the development of rules, or
protocols, for transferring data between different types of computer
networks.
These "internet" (from "internetworking") protocols made it
possible to develop the worldwide Net we have today that links all sorts
of computers across national boundaries. By the close of the 1970s, links
developed between richmond advertise ARPANet and counterparts in other countries. The world
was now tied together in a computer web.
richmond webmaster In the 1980s, this network of networks, which became known
collectively as the Internet, expanded at a phenomenal rate. Hundreds,
then thousands, of colleges, research companies and government agencies
began to connect their computers richmond internet promotion to this worldwide Net. Some
enterprising richmond webmaster hobbyists and companies unwilling to pay the high costs of
Internet access (or unable to meet stringent government regulations for
access) learned how to link their own systems to the Internet, even if
"only" for e-mail and conferences. Some of these systems design richmond began
offering access to the public. Now anybody with a computer and modem --
and persistence -- could tap into the world.
In the 1990s, the Net continues to grow at exponential rates. Some
estimates are that the volume of messages transferred through the Ne ... |
