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Computer Hardware
20th June 2008
We are all aware of the need for printers, even manufacturers need specialised printers. For example food manufacturers need special printers that can produce a barcode on the label so that it can be traced back to the factory and through each step of pro...
20th June 2008
When I first started out with my own business about five years ago now, friends and family said what are you going to do? I came from an accounting background and have always been interested in commerce, counting and generally trying to make money. So the...
20th June 2008
If you have ever started a new business or spent time at college as a student, you will know that you don’t have a limitless budget that allows you to go off to the local Mega Mart and buy endless quantities of branded ink cartridges.
Yes, you watch ...
20th June 2008
Game tester is the dream job of many gamers. But, this is not an easy job, as it may seem to be. To become a game tester one need have determination and patience along with the knowledge of highly technical skills.
To become a video game tester, the fi...
20th June 2008
The History of Traditional PSTN
The traditional PSTN (Public Switched Telephone Network) has been continuously improving since its inception by Alexander Bell. There are valid reasons why PSTN exists in its current state.
What is Ring-Down...
20th June 2008
Understanding FTTH (Fiber To The Home)
FTTH is an all-fiber connection to the home which provides a minimum of 155Mbps bandwidth on both up stream and down stream directions. Basically, it is composed of a fiber from the service node to the opti...
20th June 2008
Test your knowledge of vital Cisco and CompTIA certification exam topics with these free questions!
Network+ / CCENT / CCNA Question:
What protocol allows a host to determine the MAC address of another host that is on a different side of the router?...
20th June 2008
Frame Relay is a major topic on your CCNA and CCENT certification exams, and for good reason. Frame Relay is a part of just about every Wide Area Network (WAN) you'll ever work with, and you've got to know how to configure and troubleshoot FR to be succes...
20th June 2008
Why Do We Need Fiber Optic Attenuators?
A fiber optic attenuator, also called an optical attenuator, simulates the loss the would be caused by a long length of fiber. Typically, this device performs receiver testing. While an optical attenuator ...
20th June 2008
Why do we need fiber optic isolator?
Light can be reflected back and forth. This is also true in fiber optic communication networks. But in fiber optic networks, most of the reflections are harmful to the stability of the system which is especia...
20th June 2008
What is an optical circulator?
The optical circulator has similar function and design as the optical isolator. An optical circulator is an nonreciprocal passive device that directs light sequentially from port 1 to port 2, from port 2 to port 3,...
20th June 2008
What is all-optical switching?
All-optical switching is a process by which light, usually in the form of digital communication signals, is routed from one transmission channel to another, or modulated, without intermediate conversion to another ...
20th June 2008
Knowing the time is an essential part of our daily lives. We all need to know what time to start work, what time to leave and even when to get up in the morning. We have a multitude of different devices for telling us the time; from our mobile phones to o...
20th June 2008
Demands are high for computing in industry. Industrial machines have to cope with many hostile elements whilst also providing reliable computing. Traditionally industrial computers have been specific, bespoke machines. These industrial computers tend to r...
20th June 2008
What is fast Ethernet?
Ethernet is the term coined by Robert Metcalfe of PARC for the system he developed to power the new laser print in his office building. In the early 1970’s this was new challenge, as the Xerox printer was connected to a large n...
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