Transcript Computer Lit. Chapters 5

Introduction To Computer and Information
Technology
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Storage Device – hardware components that
retain data even after power is lost
Storage Media – Object that physically holds
data such as a CD or DVD.
BIOS –(Basic Input/Output System) is a set of
programs that tells the computer system how
to start up.
Memory & Storage
◦ Memory(RAM)- temporary location to store files
◦ Storage – permanent storage in various locations in
and around the PC.
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Write the following words on a sheet of paper
1) Online Storage(Cloud)
2) Flash Storage(Drive)
3)External Hard Drive.
Below or beside each term indicate when this
type of storage should be used and draw a
picture that can be associated with the
particular type of storage(Example Draw a
cloud out beside Online Storage.
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Break into groups of 2
Next disassemble the provided hard drive and
then identify the key parts found in graphic
below.
After reassembling your hard drive in your
group write a one paragraph explanation over
how a hard drive works using at least 5 of the
key parts that were identified.
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Primary Storage – main memory of the
computer and commonly called RAM
Secondary Storage – Devices that can store
data permanently such as hard drives, flash
drives, CD’s, external hard drive or the cloud.
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Read Only Device – CD-Rs are examples of read
only devices since you cannot change the data on
the medium or save more data to it
Read/Write Device – CD-RW is an example of a
read/write device where you can read and also
write or change data on the medium.
How does it all work……
Optical storage(CD’s and DVD’s) is an electronic storage
medium that uses low-power laser beams to record and
retrieve digital (binary) data. In optical-storage
technology, a laser beam encodes digital data onto an
optical, or laser, disk in the form of tiny pits arranged in
concentric tracks on the disk’s surface. A low-power
laser scanner is used to “read” these pits, with
variations in the intensity of reflected light from the pits
being converted into electric signals(Web Source For
Explination)
How CD's Work
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Construct a one paragraph newspaper article
that informs the reader about CD’s and DVD’s
and how information is both stored and
retrieved from these two types of optical
storage mediums.
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Slow Retrieval – searching from the beginning
to the end or required to look in multiple
places.
Data Decay - Wearing down of the storage
medium causing data to be lost. Air, heat
and humidity can impact drives, CD’s and
DVD’s
Friction – The more a magnetic medium such
as a CD is used or hard drive is used the
greater chance that the medium and friction
cause issues.
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Cloud – Internet and servers to store data
Virtualization – multiple storage devices in
various locations are brought together to
make the user feel that all the data is in one
place.
SAN – a network of storage devices
New Magnetic Media – hard drives will store
as much as 1 Tb per square inch.
Holographic Media – stores data in images
called holograms on optical cubes and will be
10 times faster than today’s hard drives.
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Holographic Media – stores data in images
called holograms on optical cubes and will be
10 times faster than today’s hard drives.
It is hard to almost believe the statement
above and some will not believe it until they
see it.
Create a graphical depiction that will
showcase Holographic Media and how it will
be used. A viewer should be able to see how
the data will be stored and get an indication
of how much faster it will be when compared
to today’s hard drives.
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Operating System defined – a set of
instructions designed to work with a specific
type of computer.
Operating systems are generally stored on the
hard drive and is loaded into memory(RAM)
before the computer can be used.
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Real Time Systems – used to control large
equipment such as factory machines or
construction equipment.
Single User/Single Task Systems – a person can do
one task at a time, what is usually on a handheld
computer such as a price scanner.
Single User / Multitasking Systems – allows the
computer to perform several jobs at once. Windows
Multi-User Systems – allows multiple individuals to
use one large computers, the OS balances the
work.
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Desktop – a visual display that lets you
interact with the workspace and visual items
such as icons
Icons – On the screen pictures that represent
programs or resources on a PC
Options – the OS allows you to change the
background or the placement of icons or
color schemes.
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Design a collage of operating systems. The
collage should have at least ten (10) different
operating system names or logos. The
operating systems can be for computer
systems or for iOS(phone & tablet) devices.
The collage can be designed within a
computer program or on a standard piece of
paper.
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-Create a new iOS or mobile operating system for
Smartphone’s or portable devices. Students should
research a current iOS or mobile operating system first
to see the main features and characteristics and then
each students needs to create a one page magazine
article that will include a name for his/her iOS or
mobile operating system. Each iOS should have some
sort of logo or design that represents the iOS or mobile
operating system (Example the Android), the main
features of the IOS should be listed, the benefits a user
would experience by using this iOS or mobile operating
system when compared to other iOS’s or mobile
operating systems should be included A release date
for the iOS or mobile operating system along with the
phones or platforms that the iOS or mobile operating
system is intended for should be included.
Students will have two days to design the magazine
article.