Saturday, August 14, 2010

COMPUTER COMPONENTS


Central Processing Unit (CPU) or the processor
                            -is the portion of a computer system that carries out the instructions of a computer program, and is the primary element carrying out the computer's functions.
                            -refers to the microprocessor chip.
  3 Parts of CPU
             1. Control Unit-act as overall manager
             2. Arithmetic Logic Unit(ALU)-performs mathematical and logical operations.
             3. Main Memory -is the primary memory                      
                                RAM(Random Access Memory)
                                            -memory used by the computer to run programs.
                                            -a temporary storage memory.
                                ROM(Read Only Memory)    
                                    -no matter how many times i turned off the computer the software
                                               that I install will not be lost.                    
Motherboard -this is where the core components of your computer reside which are listed below. Also the support cards for video, sound,networking and more are mounted into this board. 
 Microprocessor -this is the brain of the computer. It performs commands and instructions and controls the operation of the computer.
Power Supply-comes with the case, but this component is mentioned separately since there are various types of power supplies. (250-500 watts)
Audio Card-is the voice of your system. 
                   -is a computer expansion card that facilitates the input and output of audio signals to and from a computer under control of computer programs.
 Floppy Drive-is a small disk storage divice that today typically has about 1.4 megabytes of memory.
Hard Drive-is a non-volatile storage device for digital data.
Network Card-use to connect to high speed internet access. (ex.cable or DSL lines)
Video Card-provides visual image to the monitor.
                  -used in computer games to provide additional memory visual effect.
Monitor - This device which operates like a TV set lets the user see how the computer is responding to
                          thie commands. 
Keyboard - This is where the user enters text commands into the computer.
Mouse - A point and click interface for entering commands which works well in graphical environments. 
Printer -use to print out.
Video Camera-a webcam
Uninterruptible Power Supply-essentially a battery back up in case of power failure.
                                                 (UPS)280VA-400VA


 

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