a quick tour of technology
Post on 28-Feb-2018
220 Views
Preview:
TRANSCRIPT
-
7/25/2019 A Quick Tour of Technology
1/48
A Quick Tour of
Technology
Sabqat us Sahar
1
-
7/25/2019 A Quick Tour of Technology
2/48
Topics Categories of computer by size
Super, Mini, Mainframe & Micro
Computer Hardware I/O Device Storage Devices e!ecommunication Devices Connecting Devices
Computer Software "pp!ication Software & System Software
2
-
7/25/2019 A Quick Tour of Technology
3/48
What is IT ?Information Technology (IT)
It refers to anything related to computing
technology, such as networking, hardware,software, Internet,storage, and otherphysical devices, secure and exchange allforms of electronic data and thepeople
that wor with these technologies
1!"
-
7/25/2019 A Quick Tour of Technology
4/48
-
7/25/2019 A Quick Tour of Technology
5/48
Types of #omputers
Supercomputers
+ainframe computers
+inicomputers+icrocomputers
1!
-
7/25/2019 A Quick Tour of Technology
6/48
-igh capacity
.sed by large organi/ations
.sed for scienti0c and engineering application
Tracing space
nline baning,
weather forecasting,nuclear energy research
petroleum exploration
1!
Supercomputers
-
7/25/2019 A Quick Tour of Technology
7/48
ccupies specially wired, air!conditionedrooms
#apable of great processing speeds and datastorage
3ot as powerful as supercomputers
1!4
+ainframe #omputers
-
7/25/2019 A Quick Tour of Technology
8/48
5nown as midrange computers
+edium!si/e companies
.sed by departments of largecompanies
1!6
+inicomputers
-
7/25/2019 A Quick Tour of Technology
9/48
7east powerful
Widely used
8our types
9estop3oteboo or laptop
Tablet :#
-andheld
1!;
+icrocomputers
-
7/25/2019 A Quick Tour of Technology
10/48
System unit
Input
-
7/25/2019 A Quick Tour of Technology
11/48
Computer Hardware
I/O Device Storage Devices
e!ecommunication Devices Connecting Devices
11
-
7/25/2019 A Quick Tour of Technology
12/48
Input is any data and instructions entered intothe memory of a computer
$n input device is any hardware componentthat allows users to enter data andinstructions 'programs, commands, and userresponses( into a computer)
9epending on the application and yourparticular requirements, the input de&iceselected may &ary)
What Is Input?
12
-
7/25/2019 A Quick Tour of Technology
13/48
$ keyboard is an input de&icethat containseys users press to enter data andinstructions into a computer
Keyboard Ergonomics9esign that reduces the chance of wrist and
hand in>uries
Keyboards for obile !omputers andobile "evices
The Keyboard
1"
-
7/25/2019 A Quick Tour of Technology
14/48
$ pointing de&ice is an input de&ice thatallows auser to control a pointer on thescreen)
In a graphical user interface, a pointer is asmall symbol onthe screen
ouse
TrackballTouchpad
#ointing $tick
#ointing "evices
1*
-
7/25/2019 A Quick Tour of Technology
15/48
ideo games and computer games use agame controller as the input de&ice thatdirectsmo&ements and actions of on!screenob>ects
%amepads
&oysticks and Wheels
'ight %uns"ance #ads
otion$ensing %ame !ontrollers
%ame !ontrollers
1
-
7/25/2019 A Quick Tour of Technology
16/48
Touch screens that recogni/e multiple points ofcontact at the same time are nown as multi-touch.Laptop
NotebookKiosk
Mobile & Tablets
Microsoft Surface
Touch$ensitive #ads#en Input
"igital !ameras
$canners and eading "evices
Touch $creens and Touch$ensitive #ads
1
-
7/25/2019 A Quick Tour of Technology
17/48
Touch $creens and Touch$ensitive #ads
icrosoft $urface
14
-
7/25/2019 A Quick Tour of Technology
18/48
Touch $creens and Touch$ensitive #ads
5ios input de&ice
16
-
7/25/2019 A Quick Tour of Technology
19/48
$n optical reader is a device that uses a light sourceto read characters, mars, and codes and thencon&erts them into digital data that a computer canprocess)
ptical character recognition '#@(ptical mar recognition '+@(
Aar #ode @eaders
@8I9 @eaders'@adio!8requency Identi0cation(
+I#@ @eaders'+agnetic In #haracter@ecognition(
+agnetic Stripe #ard @eaders'+S#@(
*ptical eaders
1;
-
7/25/2019 A Quick Tour of Technology
20/48
What is utput ?utput is data that has been processed into a
useful form) That is, computers process data'input( into information 'output()
The form of output varies, depending on thehardware and software being used and therequirementsof the user)
While woring with a computer, a userencounters four basic types of outputB text,graphics, audio,and video)
2=
-
7/25/2019 A Quick Tour of Technology
21/48
21
-
7/25/2019 A Quick Tour of Technology
22/48
-
7/25/2019 A Quick Tour of Technology
23/48
-
7/25/2019 A Quick Tour of Technology
24/48
$ !at-panel displa"# C!
is a lightweight display de&ice with a shallow
depth and Cat screen that typically uses 7#9'liquid crystal display( or gas plasma
technology)
$ !T monitor is a destop monitor that
contains a cathode!ray tube) $ cathode-ra"tube $%T ' is a large, sealed glass tube)
Types of display de&ices
2*
-
7/25/2019 A Quick Tour of Technology
25/48
-
7/25/2019 A Quick Tour of Technology
26/48
$ plasma monitor is a display device that
uses gas plasma technology, which
sandwiches a layer of gas between two glassplates)
When &oltage is applied, the gas releases
ultra&iolet '.( light) This . light causes the
pixels on the screen to glow and
form an image)
#lasma onitors
2
-
7/25/2019 A Quick Tour of Technology
27/48
9isplay Screens
24
-
7/25/2019 A Quick Tour of Technology
28/48
$ printer is an output device that produces
text and graphics on a physical medium such
as paper)
:rinted information, called hard cop", exists
physically and is a more permanent form ofoutput
than that presented on a display 9e&ice 'softcopy()
$ hard copy, also called aprintout, is either in
portrait or landscape orientation)
#rinters
26
-
7/25/2019 A Quick Tour of Technology
29/48
$n impact printer forms characters and graphicson a
piece of paper by striing a mechanism against an
ined ribbon that physically contacts the paper)9ot matrix
9aisy wheel
7ine :rinter
Impact #rinters
2;
-
7/25/2019 A Quick Tour of Technology
30/48
$ nonimpact printer forms characters and
graphics on a piece of paper without actually
striing the paper) Some spray in, while others
use heat or pressure to create images)
#ommonly used nonimpact printers are
ink+etprinters, photoprinters, laserprinters,
thermalprinters, mobileprinters, label and postageprinters, plotters, and large!format
printers)
on impact #rinters
"=
-
7/25/2019 A Quick Tour of Technology
31/48
#lotters are sophisticated printers used to produce
high!quality drawings such as blueprints, maps, andcircuit
diagrams"These printers are used in specialized #eldssuch as
engineering and drafting and usually are very costly"
.sing in!>et printer technology, but on a much larger scale,
a large!format printer creates photo!realistic!quality color
prints)
Draphic artists use these high!cost, high performance
printers for signs, posters, and other professional quality
displays
#lotters and 'arge-ormat
#rinters
"1
-
7/25/2019 A Quick Tour of Technology
32/48
-
7/25/2019 A Quick Tour of Technology
33/48
-
7/25/2019 A Quick Tour of Technology
34/48
-
7/25/2019 A Quick Tour of Technology
35/48
$T%&'() !evicesThe process of storing personal data or
information for future use is called ST@$DE8 9$T$)
When a user issues a command lie$pplications programs'+S 88I#E ,:$I3T etc(perating system 'WI39WS( locates theprogram in storage 9e&ices such as on a-ard 9is or optical 9is then lauds it into@$+ '@andom $ccess +emory(
"
-
7/25/2019 A Quick Tour of Technology
36/48
-
7/25/2019 A Quick Tour of Technology
37/48
"4
-
7/25/2019 A Quick Tour of Technology
38/48
$ net/ork is a collection of computersand devices connected together, often/irelessly, via communications devices
and transmission media0When a computer connects to a networ, it is
called online)
et/orks allo/ computers to shareresources, such as hard/are, soft/are,data, and information) Sharing resourcessa&es time and money)
What is 3etwors ?
"6
-
7/25/2019 A Quick Tour of Technology
39/48
Three types of 3etwors
7$3 $Local )rea Net*ork'+$3 $Metropolitan )rea Net*ork'
W$3 $+ide )rea Net*ork'
Types of 3etwors
";
-
7/25/2019 A Quick Tour of Technology
40/48
Types of 3etwor
*=
-
7/25/2019 A Quick Tour of Technology
41/48
3etworing 9e&ices.ub$/itch
1ridge
outer
%ate/ay
odem
I!s (et/ork Interface !ard)I$" (Integrated $ervices "igital et/ork)
"$' ("igital subscriber 'ine)
W2#s (Wireless 2ccess #oint)
*1
-
7/25/2019 A Quick Tour of Technology
42/48
3etworing 9e&ices
*2
-
7/25/2019 A Quick Tour of Technology
43/48
-
7/25/2019 A Quick Tour of Technology
44/48
$ystem $oft/are
#onsists of the programs that control ormaintain the operations of the computerand its de&ices lie Windows)
System software ser&es as the interfacebetween the user, the application software,
and the computerGs hardware)
$ystem $oft/are
**
-
7/25/2019 A Quick Tour of Technology
45/48
*perating $ystem -unctions
*
-
7/25/2019 A Quick Tour of Technology
46/48
Types of *perating
$ystemsThe three basic categories of operatingsystems that exist today
!ategories of *perating $ystems
Stand!alone perating system
Ser&er perating system
Embedded perating system)
*
-
7/25/2019 A Quick Tour of Technology
47/48
-
7/25/2019 A Quick Tour of Technology
48/48
top related