Transcript Day- 7 - wrwebheads

DAY- 7
How a Computer Works- Day 1
Review Quiz
■ Take Lesson 1-7 Review Quiz (10pts)
■ Journal Check
How a Computer Works- The Pieces
CPU
• Central Processing Unit
• Sometimes referred to simply
as the central processor, but
more commonly called
processor
• CPU is the brains of the
computer where most
calculations take place
• In terms of computing power,
the CPU is the most
important element of a
computer system.
Motherboard
It holds and allows communication
between many of the crucial electronic
components of a system, such as the
central processing unit (CPU) and
memory, and provides connectors for
other peripherals.
RAM
• Random Access Memory
• The term RAM is
synonymous with main
memory, the memory
available to programs. For
example, a computer with
8MB RAM has
approximately 8 million
bytes of memory that
programs can use
• RAM is the most common
type of memory found in
computers and other
devices, such as printers
Expansion Cards- Network,
Sound, Graphics, Modem, Etc…
• Circuit board that fits
into an expansion slot
on a desktop computer.
An expansion card is
used to give a
computer additional
capabilities
• Expansion cards can
sometimes be called
daughterboards
• Can also be onboard
the motherboard
Hard Drive
• Hard Disk Drive (HDD)
• A modern HDD records
data by magnetizing a
thin film on a disk
• Data is read from the
disk by detecting the
transitions in
magnetization
• 1-terabyte (TB) drive has
a capacity of 1,000
gigabytes (GB; where 1
gigabyte = 1 billion bytes)
Drive Bays
• A drive bay is a system
unit space reserved for
the installation of any
drive or other computer
accessory. The picture
is an example of a
tower case showing an
example of a 5.25" (5
1/4") and 3.5" (3 1/2")
drive bays
• Examples- Hard Drive,
CD/DVD ROM, USB, Zip
Drive, Floppy Drive, SD
Card, etc…
Peripherals
• A computer peripheral, or peripheral
device, is an external object that provides
input and output for the computer.
Heat Sink Assembly
• Heat sinks cool down
your computer's
processor after it runs
multiple programs at
once
• Without a quality heat
sink, your computer
processor is at risk of
overheating
• An attachment for a CPU
that prevents the chip
from overheating
USB Connectors
• Universal Serial Bus
• Mid-1990s
• designed to
standardize the
connection of
computer peripherals
• Both to communicate
and to supply electric
power
• Commonplace on
other devices, such as
smartphones, PDAs
and video game
consoles
Power Supply
• The desktop computer
power supply changes
alternating current from
a wall socket to lowvoltage direct current to
operate the processor
and peripheral devices
• Most modern desktop
personal computer
power supplies conform
to the ATX specification,
which includes form
factor and voltage
tolerances
Video- What’s Inside Your
Computer
Group Activity- Computer Break Down
Review
■ Computer Parts
■ Journal Needs
■ Next Class