viruses infect the system files your computer uses every time it powers up
Every Time The Computer Is Turned On
Bill Gates made a deeal with IBM to license the DOS (disk oprerating system) on every computer IBM. IBM thought that the money was in the hardware. But as profit margins fell on the hardware it turned out that Gates made the right choice. Pretty soon he had the rights to sell the operating system on every IBM compatible computer.
The component that is involved in every activity of a computer system would be the processor. It is sometimes referred to as the brain of the computer, or some people call it the General in the army of computer parts, it is the first to start and the last to be spoilt, it does all the 'Thinking ' (processing of information) of a computer system.
Operating system
An operating system.
This is because if you do not have it, your computer cannot work.
PROM is "Programmable Read Only Memory" RAM is "Random Access Memory" Prom is used to retain data even when the computer is turned off. RAM is used by the computer to run applications when the computer is running. RAM is high speed memory that can be read/written while the computer is running. Applications and data are loaded into RAM every time your computer is turned on. PROM, ROM, EPROM are all versions of memory that typically contain the same data every time the computer is turned on.
Instruction Decoder
A computer system is a collection of components that together help process, organize, store and retrieve data. Every computer system is composed of hardware and software.
Full
It depends on the computer, every computer is different. If you want to check your memory go to Start > Control Panel > System. There you can find information about the computer, and also the memory.
Click on control panel option and choose system properties option to get every information about the system.