Precautions from virus attacks

A number of general precautions are herewith provided to minimize the possibility of virus infection.  Back up important data frequently and keep them in a safe place other than the computer. Patch the operating system as quickly as possible to block the potential vulnerabilities that malware can exploit and sneak in. Obtain the most recent virus definition to keep the antivirus application up-to-date. Be suspicious of e-mail attachments...

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Optical mouse - Principle and working

What is a mouse? The mouse is a pointing device which helps us to operate the computer. Unlike the complicated hardwares such as Mother board,RAM, Hardisk, Processor of the computer, the mouse is designed with a simple circuit to process. Now a days, we get varieties of mouse with different technologies in the market. The developing applications in the computer field has not completely excluded the mouse yet. Although, we have switched to Touchpads...

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TFT LCD TV - Principle of working

What is TFT LCD? The TFTLCD is explained as Thin Film Transistor Liquid Crystal Display. The Liquid Crystal Display’s which are used in famous LCD TV’s and TFTLCD TV’s are referred to as Nematic Phase liquid crystals. There lies a Thin Film(layer) Transistor arranged and so, it is called as  Thin Film Transistor Liquid Crystal DisplayThese Liquid crystals takes neither a solid or liquid form. The main difference between the LCD TV’s...

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Mobile Phones - Principle of operation

A cellular/mobile system provides standard telephone operation by full-duplex two-way radio at remote locations. It provides a wireless connection to the Public Switched Telephone Network (PSTN) from any user location within the radio range of the system. The basic concept behind the cellular radio system is that rather than serving a given geographical area within a single transmitter and receiver, the system divides the service area into...

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Tips for Longer PC life

1. Keep your PC in a smoke-free environment. Tobacco smoke can damage delicate contacts and circuits.  2. Leave your PC running. Powering up from a cold state is one of the most stressful things you can do to your system's components. If you don't want to leave your PC running all the time, use Windows' Power Management settings to put your machine into hibernation rather than completely shutting down. In Windows XP, right-click the desktop...

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