Transcript computers p.p Group 5 - technology-two

COMPUTERS
- a necessary harm-
"Who invented the computer?" is
not a question with a simple
answer. The real answer is that
many inventors contributed to
the history of computers and
that a computer is a complex
piece of machinery made up of
many parts, each of which can
be considered a separate
invention.
Here are some of the inventors:
1936- Konrad Zuse First freely
programmable
computer
1942-
Howard Aiken & Grace HopperThe Harvard Mark 1 computer
Evolution of Computers
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Are you on a computer right now?
Then do you know how a computer evolved?
The term Computer, originally meant a person capable of
performing numerical calculations with the help of a mechanical
computing device.
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The evolution of computers started way back in the late
1930s.
In the evolution of computers the first generation was
characterized by the use of vacuum tubes. These computers
were expensive and bulky. They did not support multitasking.
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In the 1960s, transistor based computers replaced vacuum tubes.
Transistors made computers smaller and cheaper. But transistors were
responsible for the emission of large amounts of heat from the
computer.
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The use of transistors marked the second generation of computers
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The use of Integrated circuits was in the third generation of
computers. Small transistors placed on silicon chips, called semi
conductors. This increased the speed and efficiency of computers.
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Operating systems were the human interface to computer operations
and keyboards and monitors became the input-output devices.
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Thousands of integrated circuits placed onto a silicon chip made
up a microprocessor. Introduction of microprocessors was the
hallmark of fourth generation computers.
FIRST
MICROPROCESSORS
IN 1971
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The fifth generation computers are under development. They are going
to be based on principles of artificial intelligence and natural language
recognition. Developers are aiming at computers capable of organizing
themselves.
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1991 - World-Wide Web (WWW)
was developed by Tim BernersLee
1996 - Microsoft failed to
recognized
the importance of the Web, but
finally
released the much improved
browser
Explorer 3.0 in the summer.
The most recent type of computer looks like a
pen….It may be hard to belive but is
true…..
The virtual keyboard is already on the market
for certain mobile phones
Components
The system unit is
composed of a
motherboard, a power
source, a microprocessor,
memory, hard-disk(s), and
a graphic card. These are
the core components of a
system unit. Apart from
these we can find auxiliary
components such as a TV
tuner, CD/DVD ReadingWriting units, floppy disk
unit, etc.
There are 3 types of
monitors: CRT monitors
(cathode-ray tube), LCD
monitors (liquid crystal
display) and LED monitors
(light-emitting diode).
Vocabulary exercises :
1. Complete the fallowing sentences with one word
only:
1.
2.
3.
4.
5.
If you want your computer to work, you ……. it on.
Jim wants to ………… his computer.
This project is really good. You need to ………………
it form this website: www.project.com
A computer is a …………. that receives input,
stores an manipulate data and provides output in
a useful format.
The first computer did not support ………………… .
In the evolution of computer the first generation
was characterized by the use of …………. tubes.
7. Mary needs to…….. on the school’s website.
8. The first electronic computers were the size of a
large room, consuming as much power as several
hundred modern ……………. computers.
9. If you want to go on-line, you need to turn on your
…………… .
10. My computer doesn’t work well. I probably got a
……….. .
6.
1. Match the items to form the definition:
1) an output device
that produces a paper
copy of alphanumeric
or graphic data.
2) aided electronic system using
photoelectric cells to separate copy, as
color illustrations, into its primary
colors, correct color copy, and produce
a set of color separations ready for
proofing or printing.
4) parts of the computer which do
not have a material form, such as
programs, data, protocols, etc.
3) all of those parts
of a computer that
are tangible objects
5) to transfer (software, data, character sets,
etc.) from a smaller to a larger computer
The results of the survey are as
following. There were questioned 20
persons with age between 15-19.
1. Have you ever used a computer?
0%
Yes
No
100%
2. Do you own a computer?
10%
Yes
No
90%
3. Do you have access to the Internet?
5%
Yes
No
95%
4. Do you use the computer to do your
homework?
10%
Yes
No
90%
5. Do you use the computer only for
games?
10%
Yes
No
90%
6. Do you consider yourself dependent on
computer?
5%
Yes
No
95%
7. How many hours do you use the computer per
day?
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3 hours
2 hours
1 hour
4 hours
6 hours
8. What software do you have on your computer?
 Windows
 Winamp
 Yahoo Messenger
 VLC
 Photoshop
 Media player
 BS-player
 Nero
 U- torrent
9. What is your favorite activity on the computer?
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Playing games
Chatting
Listening to music
Surfing on the Internet
Watching movies
10. How do you imagine your life without a
computer?
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Boring
Healthier
Harder
More TV, less information
Not so hard
Not so interesting
11. Do you think messenger is an efficient way to
communicate? Why?
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Yes, because is easy and fast;
Yes, because is free;
Yes, because you make a lot of friends;
Yes, because you keep in touch with your
friends;
No, because people use to take different identity
an isolate from the real world;
No, because you can not make real friends;
Made by:
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Madalina Alexe
Angela Moga
Loredana Muntiu
Andrei Nemes