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Network Computers
The network computer (NC) is an alternative approach to
desktop computing and was primarily designed to act as the client in a
client/server network, where most of the data processing is done by the server.
Network computers rely on the central server for computing power because they
have minimal memory as well little or no local disk storage, hence are also
known as thin clients.
This means that the operating system, applications and data
are stored on the central server and loaded when needed; however unlike
computer terminals connected to a shared computer, most of the data processing
takes place in the network computer.
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Network computers usually come in two flavours:
-
Client-oriented network computer: This is the approach that is backed by Sun
Microsystems and Oracle. Here the diskless computer operates using a Java-based
module called the Java Virtual Machine (JVM). This may come alone or might be
built into a web browser.
When a user logs onto the computer,
a Java based operating system downloads onto the computer and then the user can
use the services available on that computer. Some organisations have discovered
hat they need server-based emulation programs to run Windows applications or
built in terminal emulations to connect to legacy systems.
-
NetPC: This is a Windows-based diskless, stripped down PC with no local storage
facilities. This is the approach that is backed by Microsoft and Intel.
Network computer champions like Sun Microsystems and Oracle
sing the praises of network computers, claiming they can reduce the cost of
running networks by up to 70% as compared to the PC.
Networks computers are easier to maintain as most of the
software maintenance can be done centrally as compared o the PC, where it
usually has to be done peripherally.
One major drawback for network computers is the software,
which is still in its infancy stages. Though effects are being made to correct
this, the software needed by network computers is still not as mature as that
used in used in PCs.
For now, a network computer might not be an ideal solution for
everyone especially for those who might require a lot of computing power and
carry out multiple complicated tasks. Hopefully this might be different when
the technology finally comes of age.
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