Computer 101: Computer Acronym for Newbie

1. VIRUS         -           Vital Information Resource Under Siege

                                   

            A computer virus is pattern after the real life virus that affect living organism. Just like its organic counterpart, the computer virus spread itself from one infected file to another by making copies of itself and attaching that copy to the file or infecting a file. If let alone inside a computer system, a virus can have very serious consequences result from lost of data, performance slowdown and  to a less harmful display of characters to your screen,.

 
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                        Computer VIRUS Explained in Wikipedia

2. RAM           -           Random Access Memory

The term use to describe the memory that is installed in our computer. The contents of this memory can be removed once the power that flow through it is turn off. This is done by shutting down the computer or by re-starting it. In a way this is very helpful to a RAM because in this way it refreshes the memory making it unload all the previous content. The SDRAM, DDR and many other type of memory fall in these categories. Also the amount of RAM in a computer varies from 1 Gigabytes up to 10 gigabytes and even more depending on the application that computer is design for.

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                                Computer RAM in Wikipedia

3. ROM           -           Read Only Memory

Unlike the RAM the ROM is smaller in size and is a permanent fixture in all computers small or large ones. Also unlike the RAM the ROM does not losses it data when power is switch off because the data that the ROM has is vital to the basic operation of the computer. The function of its peripheral’s and the interconnection of the parts inside and outside the computer and more importantly the resources and configuration of every hardware component of the computer is stored in the Read Only Memory.

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                                Computer ROM in Wikipedia

4. BIOS           -           Basic Input and Output System

A stored program inside the ROM that configured the input and output resources of a computer. It is the second code or set of instructions (before the Operating system is loaded) run by a computer when it is turn on. This code allows the computer to check whether all the hardware configurations and setting is correct before loading the software called the operating system which will control the operation of the computer in the hands of a human who will use it.

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                                Computer BIOS in Wikipedia

5. POST          -           Power-On Self-Test

This is a routine down by the computer or any electronic device before the booting process begins. The function of this code is to check whether all the required hardware is connected and is working properly. It will not load the next set of instructions if it finds any required hardware not connected or is not working properly. One clear example of this is in a computer boot up sequence when the POST detect that no keyboard is connected to the system unit, the boot up sequence will stop and it will display  a message on the screen “Keyboard Error”. The boot up sequence will be stop until the keyboard error is corrected by connecting a working keyboard and resetting the computer to do the boot up sequence again. 


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Computer POST in Wikipedia