Fasttrack to Computers

mashpeemoveMobile - Wireless

Nov 24, 2013 (3 years and 7 months ago)

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Laurie Shteir

Temple University CIS Dept.

Fasttrack to Computers

What do Computers Do???


A recipe following machine


Example of a program in English
-

6 instructions
(the program),
with 2 variables (J and K
-

the data).



1. move the number 1 into box J



2. move the number 1 into box K



3. output (print) the number in box J



4. add 2 to the number in box K



5. add the number in box K to the number in box J



6. go to step 3

Personal Computer

Computer System


Computer


Hardware


Software


Categories


Personal Computer


Mobile Computers and mobile
devices


Game Consoles


Servers


Mainframes


Supercomputers


Embedded computer

Information


Information Technology(IT) is defined as a
set of tools that helps you work with
information and perform tasks related to
information processing


What are some important qualities


Accuracy


Timeliness


Relevancy


Organization

Software


Application Software


Written to solve a particular problem or perform a specific
operation


Mac Write, EXCEL, FoxPro


System Software


Designed to coordinate the computers operations. It manages
the activities and allows us to utilize its capabilities. A large
portion of system software is called the Operating System


DOS, Windows (Windows 3.0, 3.1, 3.11)


Windows95, Windows 98, Windows Me


Windows NT, Windows 2000 Professional


Windows XP (new look, redesigned start menu, multiple user
accounts, more networking features built in)

Categories of Computers


Personal Computer


Desktop, tower model, workstation, laptop


Geared towards one user or connected to a network


Around a 1,000.00


Several Hundred to several thousand


Basic building block is called the processor


PC(Windows)


Apple Macintosh (Mac OS)


Mobile Computers and Mobile Devices


Laptop Computer (notebook), tablet PC, handheld
computer,PDAs, smartphones


A Mobile Computer:Personal Computer that you carry


Mobile Device: Device small enough to fit in your hand


Usually geared towards one person


Categories of Computers


Game Consoles

Standard

Handheld

Few Hundred dollars
or less

Mainframe

Large, Powerful, expensive

Partial room to a full room

Can support hundreds to thousands of
users

$300,000


several million


Servers

Controls access to hardware
and software on a network

Provides centralized storage

Support up to several thousand
connected computers


Supercomputers

Fastest and most powerful

Scientific and large scale
applications in medicine,
aerospace, weather forecasting,
nuclear energy


Categories of Computers


Embedded Computer


Component to a larger computer


Consumer Electronics


Home Appliances


Office Machines

How are Computers Used


Home Users


Desktop Computers, PDAs, Productivity Software, Browser Software, Entertainment,
email


Small Office/Home Office


Desktop Computer, PDAs, Shared Network Printer, Productivity Software, Personal
information manager, Company specific software, Browser software and email


Mobile Users


Notebook computer + modem or a Tablet PC, Video Projector, Web
-
enabled PDA/smart
phone, presentation software, Personal information Manager, Browser software, E
-
Mail,
company specific software


Large Business Users


Midrange server or mainframe, desktop or notebook computer, PDA,Productivity
software, Personal information manager, Network software, Web Browser, Email,
Company specific software


Power Users


Workstations to design plans, produce applications, create graphic art and multimedia,
WEB based products, Desktop Publilshing, Multimedia authoring, computer aided
design, Photo editing, Personal information Manager, Browser Software, E
-
Mail

Personal Computer System


Input Hardware
: Keyboard & Mouse


Processing & Memory Hardware
: Case,
Power Supply, Processor Chip, Memory
Chips, Motherboard, Expansion Slots


Storage Hardware:

Floppy Drive,

Hard Drive, CD/DVD Drive


Output Hardware
: Monitor, Speakers, Printer,
Video and Sound Cards


Communications Hardware
: Modem and
Network


Software


Copyrighted Software



Software License


Licenses for more than one person


Site License


Shareware


Freeware


Public
-
Domain Software


Rental Software

Copyright Debate


MP3


Digital music (Moving Picture Expert


Group Layer 3)


Issues


File size


Mobility


Piracy


Record Industry

Gift of Fire


Automates tasks to be more accurate, easier
and faster


Enhances communication


Changes the way we live and do business


Security


Privacy


Dependency on large systems


Acronyms


URL

Uniform Resource Locator


GUI

Graphical User Interface


HTTP:

Hypertext Transfer Protocol


HTML:

Hypertext Markup Language