Computers Controlers And Devices: Ram And Transfer In Process

1264 words - 6 pages

Table of Contents
I.Ram and Transfer in Process....................................................................2
II.Expansion Cards......................................................................................2
1)Controller..............................................................................................2
2)Video Capture.......................................................................................3
3)TV Tuner...............................................................................................4
4)Modem..................................................................................................4
5)Network................................................................................................4
6)Sound....................................................................................................4
7)Game.....................................................................................................4
8)I/O.........................................................................................................5
9)Memory.................................................................................................5
10)Video...................................................................................................5
III.5 Types of Common Computer Virus...................................................5
IV. Preventing and Protecting Computers from Viruses..........................6
V. Reference.................................................................................................6

I. RAM and Transfer in Process
RAM – stands for Random Access Memory, since it enables you to access any memory cell directly so long as you know the row and column where the cell is stored. The opposite of RAM is SAM which stands for Serial Access Memory. SAM stores data in a series or linear manner which is means it is only accessible sequentially.
RAM is the place in the computer where the operating system and currently running data or programs are kept so they can easily be fetched by the processor. Data in the RAM only resides there during the duration the program is running or the program instructions are being performed, when the computer is turned off, the RAM loses all it’s data.
RAM is similar in behavior to a person’s short-term memory while Hard Disk is comparable to a person’s long-term memory. Short-term memory focuses on the task at hand , but it can only store enough information at a time, hence when it fills-up it will try to take information from the long-term memory bank. Computers also work in the same manner, If RAM fills up, the processor continually fetch and overlay existing data in RAM with new. Unlike Hard Disks, the RAM never runs out of memory.

II. Expansion Cards
1. Controller
a controller may be an expansion card, an external device or a chip which manages the operation or functions of a specific task or...

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