intro ch 01ar
TRANSCRIPT
-
7/30/2019 Intro Ch 01Ar
1/14
Copyright 2006 by The McGraw-Hill Companies, Inc. All rights reserved.McGraw-Hill Technology Education
McGraw-Hill Technology Education Copyright 2006 by The McGraw-Hill Companies, Inc. All rights reserved.
-
7/30/2019 Intro Ch 01Ar
2/14
Copyright 2006 by The McGraw-Hill Companies, Inc. All rights reserved.McGraw-Hill Technology Education
Chapter 1A
Introducing ComputerSystems
-
7/30/2019 Intro Ch 01Ar
3/14
1A-3
The Computer Defined
Electronic device Converts data into information
Modern computers are digital
Two digits combine to make data
Older computers were analog
A range of values made data
-
7/30/2019 Intro Ch 01Ar
4/14
1A-4
Computers For Individual Use
Desktop computers The most common type of computer
Sits on the desk or floor
Performs a variety of tasks
Workstations
Specialized computers
Optimized for science or graphics
More powerful than a desktop
-
7/30/2019 Intro Ch 01Ar
5/14
1A-5
Computers For Individual Use
Notebook computers Small portable computers
Weighs between 3 and 8pounds
About 8 by 11 inches Typically as powerful as a
desktop
Can include a docking station
http://en.wikipedia.org/wiki/File:Docking_station_2.jpg -
7/30/2019 Intro Ch 01Ar
6/14
1A-6
Computers For Individual Use
Tablet computers Newest development
in portable
computers
Input is througha pen
Run specialized
versions of office
products
-
7/30/2019 Intro Ch 01Ar
7/14
1A-7
Handheld computers Very small computers
Personal Digital Assistants (PDA)
Note taking or contact management
Data can synchronize with a desktop
Smart phones
Hybrid of cell phone and PDA
Web surfing, e-mail access
Computers For Individual Use
-
7/30/2019 Intro Ch 01Ar
8/14
1A-8
Computers For Organizations
Network servers Centralized computer
All other computers connect
Provides access to network resources
Multiple servers are called server farms
Often simply a powerful desktop
Network clients
Connected to Centralized computer
Gain access to network resources throughservers
Often simple desktop
-
7/30/2019 Intro Ch 01Ar
9/14
1A-9
Computers For Organizations
Mainframes Used in large
organizations
Handle thousands
of users Users access
through a terminal
-
7/30/2019 Intro Ch 01Ar
10/14
1A-10
Computers For Organizations
Microcomputers Personal Computer/ Desktop
Single processor
Meant for single user
-
7/30/2019 Intro Ch 01Ar
11/14
1A-11
Computers For Organizations
Minicomputers Called midrange computers
Power between mainframe and desktop
Usually has multiple processors
Handle hundreds of users
Used in smaller organizations
Users may access through a terminal
-
7/30/2019 Intro Ch 01Ar
12/14
1A-12
Computers For Organizations
Supercomputers The most powerful
computers made
Handle large and
complex calculations Process trillions of
operations per
second
Found in researchorganizations
-
7/30/2019 Intro Ch 01Ar
13/14
1A-13
Mainframes vs. Supercomputers
Supercomputers are optimized for complicatedcomputations that take place largely in memory, whilemainframes are optimized for comparatively simplecomputations involving huge amounts of externaldata.
For example, weather forecasting is suited tosupercomputers, and insurance business or payrollprocessing applications are more suited tomainframes.
Supercomputers are often purpose-built for one or avery few specific institutional tasks (e.g. simulation
and modeling). Mainframes typically handle a widervariety of tasks (e.g. data processing, warehousing).
-
7/30/2019 Intro Ch 01Ar
14/14
Copyright 2006 by The McGraw-Hill Companies, Inc. All rights reserved.McGraw-Hill Technology Education
Chapter 1A
End of Chapter