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Companies generally choose this phone system for internal communication because it is less expensive than the regular network. The users can still share a number of outside lines for making calls external to the PBX. PC Card A PCMCIA card. The term PC Card is more widely used than PCMCIA. See PCMCIA. PCMCIA PCMCIA (Personal Computer Memory Card International Association) is the name of the group that produced the specification for the credit card-sized plug- in boards for laptop computers. The cards used to be called PCMCIA cards, but as this was rather unpronounceable, these cards are now termed PC cards. An example of a PC card is a credit card-sized modem. Pixel A pixel ( Picture Element) is a part of your screen. Your screen is made up of thousands of pixels, enabling you to see colours and pictures on it. The more pixels, the higher the resolution and the better the image quality. Processor The processor is the brains of the computer; it processes the instructions of your system’s programs. The processor is also known as the CPU or microprocessor and can be found on the motherboard ( see this word) of your computer. PS/2 A type of mouse or keyboard port. PSTN PSTN ( Public Switched Telephone Network) refers to the plain old telephone service, the national telecommunication networks implementing voice transmission by using analog signals. Glossary Hardware Guide Term Definition 109 nNRAM Short for Random Access Memory, the memory used to run programs and store data in current use. RAM is the fastest kind of memory to read from and write to. Information stored in RAM is lost when you turn off the computer. The higher the RAM capacity, the faster your current data can be processed. Resolution The degree of sharpness and clarity of an image. Resolution is expressed in pixels. Frequent computer screen resolutions are 640 x 480 pixels ( VGA resolution; appropriate for a 14- inch screen), 800 x 600 ( appropriate for a 15- inch screen), 1,024 by 768 ( appropriate for a 17- inch screen) , and 1,280 by 1,024. LCD displays usually use a higher resolution than a CRT of the same size. RGB signal cable RGB stands for Red, Green, Blue. A cable that requires separate transmission types for the three colours on the display. SDRAM Synchronous DRAM is a kind of dynamic random access memory running at a much higher clock speed than regular memory. Standard RAM The amount of RAM that is available on your computer when you purchase it. System recovery A recovery process that enables you to recover the hard disk image initially available on the computer. Performing a system recovery is useful in the event of a serious system crash or if you want to modify the size of your partitions. Depending on your model: You can find the system recovery on the VAIO Recovery and Documentation Disc. For more information, please refer to the Guide to Troubleshooting and Using the VAIO Recovery Documentation Disc. OR: You can find the system recovery on your hard disk drive. Fo...

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