Papers on Computers & Technology
The Internet: How It Works And How It Effects The World
Words: 1646 - Pages: 6.... ARPANET started
getting hard to manage, especially with many university sites on it.
Therefore, it was broken into two parts: MILNET, which had all the military
sites, and ARPANET, which had all the nonmilitary sites. "The two
networks remained connected, however, thanks to a
technical scheme called IP (Internet Protocol), which enabled traffic to be
routed from one net to another as needed. All the networks connected by IP
in the Internet speak IP, so they can all exchange messages." (Levine 12)
Even though there were only two networks at that time, IP was made to allow
thousands of networks. The IP is designed so that every computer .....
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Ultrasonic Radar For A Home PC System
Words: 2068 - Pages: 8.... This
technology is now offered to people who have a computer with microsoft's
quick basic, or a Macintosh, and space (equivalent to that of a coffee-pot)
to spare. Ultrasonic radar is now a small component for your computer,
giving computer operators a chance to see low flying objects, household
furniture, and even themselves on their PC screen. Just to impress a
neighbour or friend is reason enough to build your own ultrasonic radar
station.
Similar to that of a Polaroid, ultrasonic transducers are used in this
type of radar. A rangefinder emits a brief pulse of high frequency sound
that produces an echo when it hits an object. This .....
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Software Piracy And It's Effects
Words: 1051 - Pages: 4.... into
bankruptcy. Software Piracy can be compared to robbing as one is stealing the
goods of someone else and using it without paying for it. Up to 13 Billions
dollars are lost in computer piracy yearly and in order to overcome these cost
the company are force to rise the prices of their product. Brand name are
properties of their respected companies and they have the right to protect their
properties.
Understanding of the IT background of the Issue
Software is contained on disc or on a CD-ROM. Pirates copy can easily be made of
Software on disc by copying from one disc to another disc. For CD-ROM one needs
a CD-ROM burner or one copies .....
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Trends In Telecommunications
Words: 415 - Pages: 2.... first to use a total fiber optic network to traverse the nation. By
1990, AT&T had installed 300 million miles of interexchange light wave
networks.
The advantages of light wave systems are many and include
• freedom from electrical disturbance
• tremendous bandwidth or information-carrying capacity
• small physical size
• relative low cost
The speed at which information can be moved through the fiber optic
cable is also an important advantage. AT&T established an experimental
fiber optic system that moves digital information at a speed of 8 gigabits
(8 billion bits) per second over a 68-mile stretch of repeaterless fiber
op .....
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Optical Storage Mediums
Words: 997 - Pages: 4.... light does not diverge, so we
can pinpoint it to a specific place on the disk. By moving the laser a little
bit, we can change tracks on a disk, and this movement is very small, usually
less than a hairÕs width. This allows one to store an immense amount of data on
one disk. The light does not touch the disk surface, thereby not creating
friction, which leads to wear, so the life of an average optical disk is far
longer than that of a magnetic medium. Also, it is impossible to ÒcrashÓ an
optical disk (in the same sense as crashing a hard drive), since there is a
protective layer covering the data areas, and that the ÒheadÓ of t .....
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Wire Pirates
Words: 1088 - Pages: 4.... or business information.
"It's like the Wild West", says Donn B. Parker of SRI: "No laws, rapid growth
and enterprise - it's shoot first or be killed."
To understand how the Internet, on which so many base their hopes for education,
profit and international competitiveness, came to this pass, it can be
instructive to look at the security record of other parts of the international
communications infrastructure.
The first, biggest error that designers seem to repeat is adoption of the
"security through obscurity" strategy. Time and again, attempts to keep a system
safe by keeping its vulnerabilities secret have failed.
Consider, for .....
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Journalism On The Internet
Words: 1582 - Pages: 6.... to understand what all these topics are you must first understand
what the internet is. The simple answer is that it is computers all over the
globe connected together by telephone wires. It was first made by the military,
"No one owns the Internet", to have a network with no centre. That way it could
never be destroyed by nuclear war. Since then, universities have used it and it
has evolved into what it is today. It is a library that contains mail, stories,
news advertising, and just about everything else. "In a sense, freenets are a
literacy movement for computer mediated communication today, as public libraries
were to reading for an .....
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The Evolution Of Jet Engines
Words: 615 - Pages: 3.... Great Britian into the jet age with the first successful flight.
At the same time, the Germans were designing there own jet engine and aircraft
which would be one of the factors that kept Germany alive in World War II. With
technological advances by the allies a prototype turbojet known as the "Heinkel
He 178" came into a few operational squadrons in the German, British, and the
American air forces towards the end of World War II. These jets finally helped
the allies to win the war against the axis powers(Smith 23-27).
A later development in the jet industry was the overcoming of the sound
barrier and establishing normal operations u .....
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So, How Does It Work? The Wankel Rotary Engine
Words: 758 - Pages: 3.... Demonstration of RC Engine Cycles (about 104 KB)
There is a 1/5 scale model "Visible Rotary Engine", available from D and J Hobby and Academy (and undoubtedly others). There is also a .30 model Wankel engine from OS / Graupner.
Rotor, Eccentric Shaft, Peripheral Housing, and Ports
A Rotary Combustion Engine (RCE) as invented by Felix Wankel and developed with Walter Froede of NSU differs from a Piston Engine in four fundamental ways:
The RCE Rotor supercedes the piston engine's piston.
The RCE Eccentric Shaft [gloss] supercedes the piston engine's crankshaft and connecting rods.
The RCE Peripheral Housing [gloss] superce .....
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The Internet
Words: 240 - Pages: 1.... a passing grade, right? But wait, you have a
computer, a modem, and the internet! You are saved! All you have to do is log
on the internet, type in a keyword about your topic, and search. Instantly,
you can get tons of information about your topic.
The internet links people together into a web of networks and shared
software using computer terminals and telephone lines or wireless radio
connections.The basic internet was formed about 4 or 5 years ago by the United
States government with the idea to pass information between themselves rapidly
and efficently. Groups like the Army, Navy, Air Force, Marines, Coast Guard,
and NASA al .....
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