Chp 1 – Introduction to Computers - Auburn City Schools

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24 Νοε 2013 (πριν από 3 χρόνια και 9 μήνες)

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Chp 1


Introduction to
Computers

Section 4
-
6

Mobile Computer and Mobile Device


Mobile Computers


can be carry from place to
place


Mobile Devices


a computer device small
enough to hold in your hand

Notebook Computer/Laptop Computer


Most popular type of mobile computer


Fits in your lap


Thin and light weight


Usually more expensive then a desktop with the
same capabilities

Tablets PCs


Special type of notebook computer that allows
you to write or draw on the screen using a digital
pen


Some have attached keyboards


Especially useful for taking notes


Mobile Devices


Usually don’t have disk drives


Store program and data permanently on special
memory inside the system unit or on small
storage media such as memory cards


Some have Internet
-
enable

Five Popular Types of Mobile Devices


Smart Phones


PDA (personal digital assistant)


Handheld Computers


Portable Media Players


Digital Cameras


Game Consoles


Mobile computing device designed for single
-
player or multiplayer video game


Three popular models


Microsoft’s Xbox 360


Nintendo’s Wii


Sony Playstation 3

Servers


Controls access to the hardware, software, and
other resources on a network


Can support two or several thousand connected
computer

Mainframes


A large, expensive, powerful computer that can
handle 100 or 1000 of connected users


Stores tremendous amounts of data, instruction
and information

Supercomputer


Fastest, most
powerful, most
expensive computer


Can process more
than one quadrillion
instructions in a
single second



Embedded Computers


A special
-
purpose computer that function as a
component in a larger product


Everywhere


at home, in your car, and at work

Elements of a Information System


Hardware


must be reliable


Software


need to be develop carefully


Data


entered in correctly


People


should be skilled


Procedure


readily available

Example of Computer Users


Home users


family member who uses a
computer for a variety of reason such as
budgeting and personal finance


Small Office/Home Office (SOHO)


Company
with 50 employees and self
-
employed people
who work from home

Example of Computer Users


Mobile Users
-

Work on a computer a mobile
computer while away from a main office, home
office or school



Power Users


requires the capabilities of a
workstation or other types of powerful
computers


Example of power users: engineer, scientist,
architect, desktop publisher, and graphic designer

Example of Computer Users


Enterprise Users


work in or interact with a
company with many employees and uses a
computer network that process high volume of
transaction in a single day

Computer Application in Society


Education


students use computers software to
assist with learning


Finance


use computers for online banking and
online investment


Government


have Web sites to provide citizen
with up
-
to
-
date information



Computer Application in Society


Health Care


used to maintain patient records,
monitor patients, and file insurance claims


Science


use to assist with collecting, analyzing,
and modeling data


Publisher
-

use to assist in designing pages and
make the content of their available online



Computer Application in Society


Travel

online navigation system help people
travel more quickly and safely


Manufacturer


use computer
-
aided
manufacturing (CAM) to assist with
manufacturing processes