Introduction to computer

2. WELCOME to the world of computers
and data processing!
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Although this maybe the beginning of
your formal introduction to computers, you
probably use them – perhaps without realizing
it.

3. Maybe you have already heard the
phrase:
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Introduction
This does not refer to the incredible
shrinking of the planet.
“The world is getting smaller!”

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Introduction
Computers and Information are at the
forefront of these changes, and computers
themselves are getting smaller and more
portable all the time.
This reflects about how technology, from
transportation to communications satellites, is
shrinking time and distance around the globe,
for businesses and for people.

5. Information Technology (IT)
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- the collective name given to the machines,
which releases information (e.g. radio, TV,
telephone, video recorder & player,
calculator, cash register and computer).
- a term that encompasses all forms of
technology used to create, store, exchange,
and use information in its various forms.

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What is a Computer?
- It is a programmable machine.
- It is a machine that manipulates
information or data.
- It is used to type documents, send email,
and surf the Internet.
- It is used to handle spreadsheets,
accounting, games and more.

7.  The automatic teller machine
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 The supermarket check out scanner
 The library on-line book-search system
 The cheerful but mechanical sounding
telephone voice.
Examples of Computers:

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Hardware
- the equipment involved in the function of a
computer and consists of the components
that can be physically handled.
Software
- also called programs.
- refers to the planned step-by-step
instructions that tell the computer hardware
how to perform a task.

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Data
- It consists of raw facts and figures.
- It can be a list of names arranged at
random.
Information
- A processed data.
- It can be a list of names arranged in
alphabetical order.

10. Computer Literacy
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Three Aspects of Computer Literacy:
- It is having an understanding of what a
computer is and how to use it as a
resource.
1. Awareness
2. Knowledge
3. Interaction

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Knowledge - the acquired knowledge about
computers.
Interaction - The ability to interact with a
computer and to make the computer work
for you.
Awareness - the awareness of the importance
of computers as a positive force in the
information society.

12.  Black Hat - is an individual who attempts to gain
unauthorized entry into a system or network to
exploit them for malicious reasons.
 White hat hackers, on the other hand, are deemed to
be the good guys, working with organizations to
strengthen the security of a system. A white hat has
permission to engage the targets and to compromise
them within the prescribed rules of engagement.
 Grey hats exploit networks and computer systems in
the way that black hats do, but do so without any
malicious intent, disclosing all loopholes and
vulnerabilities to law enforcement agencies or
intelligence agencies.
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13. Computer Competency
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Cyberphobia
- It is having some skill with a computer so
that you can use it to meet your information
needs and improve your productivity.
- The irrational fear of, and aversion to
computers.

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