Mobile Computing

donkeyswarmMobile - Wireless

Nov 24, 2013 (3 years and 11 months ago)

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… and digital electronics allow us to manipulate all types of
information as digits (1s and 0s) in order to store and manage the
information more efficiently and effectively.

Digital

Technology


Digital Literacy


Computing Platforms

Concepts > Digital Technology

In this section:

…refers to an understanding of how computers represent different
types of data with digits, and how the usefulness of that representation
assists people in leading productive lives.

Digital

Literacy


Computer


Computer Literacy


Bits and Bytes


Digitization


Concepts > Digital Technology > Digital Literacy


ASCII


Binary Number System


Digital Convergence


Computer

A
computer

is a digital electronics device that combines
hardware and software to accept the input of data, and
then process and store the data to produce some useful
output.

Concepts > Digital Technology > Digital Literacy > Computer

Key terms

Hardware, software, input, processing, output, data,
information, general
-
purpose computer, special
-
purpose
computer


5 Primary Functions:

1.
Computation

2.
Automation

3.
Communication

4.
Entertainment

5.
Information Management


Computer Literacy

Computer literacy

refers to a
functional understanding of the
fundamentals of computers and
their uses.

Concepts > Digital Technology > Digital Literacy > Computer Literacy

Computer fluency

captures the
essence of business
expectations.

Knowledge workers
should have more than a functional understanding of
computers and be swift to pick up new computer skills.

Bits and Bytes

A
bit

short for binary digit

is
a digit that can be 1 or 0. A bit
is the smallest unit of
information that a digital
electronics device can
manipulate.

Concepts > Digital Technology > Digital Literacy > Bits and Bytes

A group of eight bits is called a
byte.

Understanding bits and how they
represent information is key to
understanding the workings of
computers and other digital electronic
devices.

Bits are stored on CDs and DVDs
by burning pits in the disk surface


KB = Kilobyte

Kb = Kilobit


Digitization

Digitization
, also called digitizing, is
the process of transforming
information, such as text, images, and
sounds, into digital representation (1s
and 0s) so that it can be stored and
processed by computers.

Concepts > Digital Technology > Digital Literacy > Digitization

Analog
information,
such as sights and
sounds,
continuously vary over
time. If what we see and hear is broken down into their fundamental
elements at very short time intervals, it is possible to describe them as
values, store them digitally, and reproduce them in a manner that fools
our senses into believing they are exact copies of the original.

ASCII

The American Standard Code for Information Interchange,
ASCII,

pronounced “
asskee
,” is the standard used to represent
keyboard characters in digital form

with 1s and 0s.

Concepts > Digital Technology > Digital Literacy > ASCII

Binary Number System

The
binary number system
is
the number system used by
computers, utilizing only two
digits: 0 and 1.

Concepts > Digital Technology > Digital Literacy > Binary Number System

The
hexadecimal number system
, or base 16, is used
in digital graphics as a shorthand for color
representation. Also known as Hex, this number
system includes 16 digits: 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, A,
B, C, D, E, F.

Digital Convergence

Digital convergence

takes
advantage of the fact that
digitization standardizes all types of
data to 1s and 0s to create devices
that combine the functionality of
several digital electronics devices
into one.

Concepts > Digital Technology > Digital Literacy > Digital Convergence

As processors become smaller and faster, and telecommunications
networks become increasingly pervasive, we can combine the
functionality of several devices and technologies.

…. describe a computer’s architecture in
terms of hardware and software.


Computing

Platforms


Personal Computer


Mobile Computing


Synchronization

Concepts > Digital Technology > Computing Platforms


Server


Supercomputer


Special
-
Purpose Computer


In this section:

Personal Computer (PC)

A
personal computer
, or
PC
, is any
general
-
purpose computer designed
to meet many computing needs of
one individual.

Concepts > Digital Technology > Computing Platforms > Personal Computer
(PC)

Notebook PC

Desktop PC

Tablet PC

Mobile Internet Device

(
MID
)

SmartPhone

Mobile computing

refers to the
use of battery
-
powered mobile
computing devices that provide
access to computing,
communication, information,
and/or entertainment anywhere,
anytime.


Concepts > Digital Technology > Computing Platforms > Mobile Computing

Mobile Computing Technologies are dependent on…


Wireless networks


Servers

Mobile Computing


Storage


Synchronization


Rechargeable batteries

Synchronization

is the process of maintaining common files
and data across multiple devices so that all copies are up to
date.

Concepts > Digital Technology > Computing Platforms > Synchronization

Synchronization

Being able to access all of our
data and files anywhere,
anytime, from any computer is a
challenge. Computer and media
companies are all working to
develop solutions that will entice
users to buy their brands.


Application server


Communications server


Database server


Email server


File server


Print server


Game server


Web server

A
server

is a powerful computer that often utilizes many processors to
provide services to many users simultaneously over a network.


Concepts > Digital Technology > Computing Platforms > Servers

Server

Supercomputers

are
the most powerful type
of computer, often
utilizing thousands or
even tens of thousands
of processors to solve
the world’s most difficult
problems.


Concepts > Digital Technology > Computing Platforms > Supercomputer

The U.S. Department of Defense uses supercomputers
for simulating atomic explosions, and researching
advanced weapons systems design.


Supercomputer

Special
-
purpose computers

are computers designed to meet a
specific need and are more prevalent, yet less noticeable, than
general
-
purpose computers.


Concepts > Digital Technology > Computing Platforms > Special
-
Purpose


Special
-
Purpose Computer

A
kiosk

is a computer
station that provides the
general public with
specific and useful
information and services.


A
kiosk

is usually
equipped with a touch
screen,
and provide
everything from online
store catalogs to maps
and exhibit information.