BasicComputerConcepts(2) Chapter4 Objec=ves15 SWBAT - - PDF document

9/4/08
 1


Basic
Computer
Concepts
(2)


Chapter
4


Objec=ves
1‐5


SWBAT


• Define
the
term
computer

• Iden=fy
the
four
basic
compu=ng
func=ons

• Iden=fy
the
different
types
of
computers

• Describe
hardware
devices
and
their
uses

• Iden=fy
types
of
soNware
and
their
uses


Students
will
be
able
to
…


Types
of
Computers


• 1. Microcomputers


eg.
personal
computer,
laptop
or
mobile
device



• 2. Servers


eg.
AFS
server,
Web
server


• 3. Mainframes


eg.
ATM
machine
&
credit
card
transac=ons


• 4. Supercomputers


eg.
simula=ons,
weather
forecas=ng


• 5. Embedded
Computers


eg.
tv
remote
control,
automobile
engines,
cameras


9/4/08
 2
 Describe
Hardware
Devices
and
their
 Uses


CPU


• “Brains”
of
the


computer


• Moore’s
Law


– CPU
capacity
doubles
 every
18
months


• Measured
in
…


– 
MHz
or
GHz


• Upgrading


– expensive
 – easy
to
install
 – compa=bility
issues


RAM


• Random
Access


Memory
(RAM)


• Short
Term
Memory

• Measured
in
MB
or
GB

• Cheap
&
Easy
Upgrade

• How
do
we
know
how


much
RAM
we
need?


9/4/08
 3


Computer
Memory


Name
 Abbrevia+on
 Equivalence
 Rela+ve
Size
 Byte
 B
 1
byte


• ne
character
of


data
 Kilobyte
 KB
 about
1,000
B


thousands
of
bytes


about
½
of
a
 typewrigen
page
 Megabyte
 MB
 about
1000
KB


millions
of
bytes


about
760
typed
 pages

 Gigabyte
 GB
 about
1,000
MB


billions
of
bytes


stack
of
typewrigen
 pages,
262
feet
high
 Terabyte
 TB
 about
1,000
GBB


trillions
of
bytes


stack
of
typewrigen
 pages,
about
51
 miles
high


Storage
Devices


• Permanent
Memory

• Different
Technologies


– Magne=c


• hard
disks,
floppy
disks,
zip
disks
…


– Op=cal



• CD‐ROM,
DVD‐ROM

• CD‐RW,
DVD‐RW


– Flash
Memory


• memory
cards
(eg.
cameras)

• Flash
Drives


Storage
Devices
(2)


• Storage
Op=ons


– Hard
disk
drive
 – GB,
TB
 – Floppy
disk
drive
 – original
storage
device
for
 microcomputers
 – Capacity:
up
to
1.44
MB
 – CD
and/or
DVD
drives


9/4/08
 4


Input
Devices


• keyboards

• mouse

• microphones

• joys=cks

• scanners

• …


Output
Devices


• Monitors


– CRT
vs
LCD
 – Resolu=on


• Printers


– ink‐jet
vs
laser
 – print
speed
 – resolu=on
(dpi)


• Speakers


Resolu=on


Image
source:
Wikipedia


9/4/08
 5


Reference:
Technology
In
Ac=on,
Pren=ce
Hall


Common
Ports


• Serial
and
Parallel
ports

• Universal
Serial
Bus
(USB)
port


– reduces
the
need
for
individual,
dedicated
ports


• Connec=vity
Ports


– Ethernet
 – Modem


• Special
Purpose
ports


– Bluetooth
 – Digital
Video
Interface
(DVI)
port
 – Audio
ports


Upkeep
and
Maintenance


• Check
Friday’s
slides

• Deleted
unneeded
files

• Run
spyware

• Update
soNware
&
hardware


9/4/08
 6


To
Upgrade?
Or
Not?


Reference:
Technology
In
Ac=on,
Pren=ce
Hall


Iden=ty
Types
of
SoNware
and
 Their
Uses


Chapter
4:
Objec=ve
4


Types
of
SoNware


• System
SoNware


– opera=ng
system
 – u=lity
programs


• Applica=on
SoNware


9/4/08
 7


Opera=ng
Systems
 U=lity
Programs


• handle
tasks
involved
with
management
and


maintenance
of
computer
system


– system
back
ups
 – Disk
Cleanup
 – Disk
Defragmenter
 – Task
Manager
 – Task
Scheduler


Types
of
SoNware


• System
SoNware


– opera=ng
system
 – u=lity
programs


• Applica=on
SoNware


– types
of
applica=on
soNware
 – soNware
suite


9/4/08
 8


Describe
Networks
and
Define
 Network
Terms


Chapter
4:
Objec=ve
5


Computer
Networks


• network:
two
or
more
connected
computers


and
peripheral
devices


• benefits


– share
resources
 – share
soNware
applica=ons


• LAN

• WAN

• client/server
network

• For
Friday


– Read
Chapter
4,
Objec=ve
6


• Homework:
Due
Thursday
by
6pm

• 1
Ques=on
about
safe
compu=ng
prac=ces

• Look
for
email:
Short
survey
on
MS
Word

• Check
your
email
daily

• Check
the
course
website