Lesson 1

tongueborborygmusΗλεκτρονική - Συσκευές

7 Νοε 2013 (πριν από 3 χρόνια και 10 μήνες)

60 εμφανίσεις

exploring Computers 
and
their uses
the computer defined
Computer is an
electronic device
that processes
data, converting
it into useful
information
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analog and Digital systems
l

Analog system:

It represents data as variable points along an
interval.
l

Digital system:

It represents data as having one distinct value or
another with no other possibilities
computers for personal use
l

Desktop
l

Workstation
l

Notebook
l

Tablet PC
l

Handheld computer
l

Smart phone
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Desktop
Designed to place
on a desk or a table
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Workstation

To perform more
sophisticated tasks
Used by engineers,
animators, scientists etc
Notebook

Works on both AC and
DC

Portable
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Tablet PC
Portable & full featured

Accept input from a pen
device called
stylus
Smart phone
Used for web
browsing and other
Office works
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Computers for Organizations

Network Servers

Mainframe computers

Mini Computers

Super Computers
Network server
A server is any combination
of hardware or software
designed to provide
services to clients.
Used for sharing data from
various terminals

Web browsing purpose
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Mainframe computer
Used mainly by large
organizations for critical
applications, typically bulk
data processing such as
census, industry and
consumer statistics,
enterprise resource
planning, and financial
transaction processing.
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Mini Computer

A minicomputer
(colloquially ,mini) is a class of
multi-user computers that lies
in the middle range of the
computing spectrum, in
between the largest multi-user
systems(mainframe
computers) and the smallest
single-user
systems(microcomputers or
personal computers).
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Super computer
For scientific computing
To perform complex
calculations

Used by satellite
launching stations,
weather forecasting
centers etc
Home users
Communication

Business work

School work

Entertainment

Financial management
Computers for industry

Design

Shipping

Process control

Service maintenance
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Computer for Government

Population

Taxes

Military

Police
Computer for health care
Ultra sound scanning
Laser surgery
Remote surgical operations
Keep track of medicines
Maintenance of patient records
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The end