Inside your Computer
Presentation
Infotech 11
September 17-20 2002
Frederick
Munro
Computer Outside
Overview
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Optical Mouse
used for interacting with the computer without
wires.
LCD 22 inch Monitor
used to view what the computer is displaying
Case with fan
Fan used to cool the all the components inside the
computer
Optical Keyboard
Used for imputing information to the computer
without wires
In-built Speakers
used recreate sounds on the computer, making
them aloud
Printer (not seen)
Used to print documents and images.
Microphone (not seen)
used to input sounds into the computer
Webcam/scanner (not seen)
Used to input video or images into the
computer
Joystick or gamepad (not seen)
used to interact with the computer the
same way as the mouse but with a different setup.
Main System Components
 1, 2: Fan and plug in for
Power supply
 3,4: Disk drives, CD-R, DVD,
floppy and hard drives
 5: Motherboard fan
 6: Motherboard
 7: RAM and Power supply for
motherboard
 8: System Case
 9: Power supply cables
 10: Power supply
 11: Large intake fan.
 12: Expansion slots
 Right below the number 6 is
the CPU
Individual Components.
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350 watt power supply from Enermax
The power-supply takes in house current
and converts it down for suitable usage
inside the computer.
Motherboard
The motherboard holds the computer
together, with spots for the CPU, bus,
expansion slots, ram, ROM and various
other things.
CPU, Pentium 4
The CPU processes all of the information
many many times a second and gives
instructions to the rest of the computer.
180gb Hard drive
Holds information for the CPU to access at
the users command. Allows many things to
be stored on it.
Individual Components
Continued
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54x CD-r/dvd drive
An input device allows to use CD's or dvd’s
RAM
The memory that the CPU draws
information really fast off of.
Sound Card (Audigy)
The card that makes processes the sound
so that it can be played out speakers.
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Video Card Geforce 4
The video card is an add-on to the CPU
providing enough computing power to
display information on to the monitor.
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Modem 56k
The modem is used to allow the computer
to connect to other computers at users
command
INPUT-OUTPUT DEVICES
Input and output also
include the expansion slots,
which are the ‘Cards’ on the
below image. The speakers
are considered output
devices as well as the
printer.
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The Boot Process
When the power is allowed into the computer the first thing that
happens is the computer pulls out and runs an auto-start program
from the ROM. The bios is like a mini operating system that starts
many of the tasks. This auto-start program searches for the hard drive
or disk drive that contains the Operating System. The computer then
checks its memory, RAM, an processor. If one has an error then the
blue screen of death appears and the user must restart. If all goes well
the computer checks the Input and Output ports and any devices on
them (sound, video, monitor, disk drives etc.) Then the computer
loads the Operating system. The autoexec.bat then runs through the
registry starting any programs that are set to start, and then it passes
control of the computer over to the user.
The Information Flow
All information goes
through the system
bus. The ‘interfaces’
would be the
expansion slots for
the Video, Sound and
other various cards.
The ram and ROM
also put information
through the bus.
Software
 Application software: An example
is Microsoft Office. Application
software is software that is used
for work or entertainment
 System software: Windows XP is
an example of System Software.
System software is an operating
system, allowing a user to use a
computer much easier then
without.
References:
www.pricewatch.com for pictures
www.google.com for pictures
www.Microsoft.com for pictures
Several images off of the info-tech 10
course.
www.alienware.com for blue computer
pictures.
www.Nvida.com for the pictures of graphics
accelerator