Transcript Computer Hardware

Computer Hardware
Dell Lab Computer without case
What is all this stuff???
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Power Supply
Motherboard
Processor
Video Card
RAM (Random Access Memory)
Hard Drive
Cooling
I/O devices (Input/Output)
The Power Supply
•Turns AC power from the outlet
into DC voltage
•110v AC converted to 3.3v, 5v, and
12v DC
•This process generates heat
Why is the power supply designed with all of the slots in it?
The Motherboard
The motherboard is what ties all of the
parts of a computer together
Power Supply, Processor, RAM, Hard
Drive, Video Card, Fans, I/O devices all are
plugged into the motherboard.
Motherboard controls all of the systems
that make a computer work
The Processor
•The Processor is what calculates code incoming from the motherboard
•All calculations are done in binary code.
•Binary Code only consists of 2 digits 0s and 1s
•Generates a lot of heat
Video Card
The video card is responsible for getting the
image to the monitor.
I do not see this in our Dell computer. Why?
Video Card
•Some motherboards are designed with a video card integrated into it.
•Achieves a cost savings but loss in performance
Random Access Memory
RAM is a place for the motherboard to store
data that will be used by the processor for
calculations
RAM has a very fast data transfer rate
Hard Drive
The hard drive is another place the
computer uses to store data.
Different than RAM
Much slower transfer speeds
New technology uses RAM in harddrives
instead of platters
Operating System/Software stored here
Cooling a Computer
Computers generate heat and
that heat must dealt with to
avoid damage
Fan in back of power supply
Heat Sink without fan
Fans are the most common
ways to dissipate heat.
Heat Sinks are another way to
deal with the heat problem.
Processors and Power
supplies generate so much
heat a combination of fan
and heat sink are used
Heat Sink with fan
Input and Output Devices
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Keyboard
Mouse
Speakers
Scanner
Bar Code Reader
Monitor
Can you name more?