... of function. So, in a given message between users, there will be a flow of data through each layer at one end down through the layers in that computer and, at the other end, when the message arrives, another flow of data up through the layers in the receiving computer. The actual programming and hardware that makes these seven layers of function is usually a combination of the computer OS, applications, TCP/IP and the software and hardware that enable you to put a signal on one of the lines attached to your computer. OSI divides communication into seven layers. The layers are in two groups. The upper four layers are used whenever a message passes from or to a user. ...
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... they are dealing with is a big drawback. Their inability to recognize their products pricing and margin structure deteriorates the ability of the representative to offer other low cost substitute items. The new purchasing environment consists of trying to have the parts on the floor when needed, not too early, and never late. Extra stock ends up in inventory, and although labeled as an asset in the books, it is actually a liability. This drives the agent to search for creative ways to control materials. One key way to accomplish this is to utilize distributors that are “committed to long term relationships in which they take on more of the responsibility ...
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... it provided a very useful industrial service. It allows commercial companies to expand their horizons infinitely easier than ever before. It became possible to set up meetings and discuss business matters with partners thousands of miles away. Companies that posessed a telephone had a enormous advantage over the rest. And in a time as economically troubled as the 30's depression, everyone was looking for a competitive edge. The telephone wasn't invented in the thirties, nor was the first transatlantic line built then, but the thirties represents a time in history when the world was changing incredible fast and much of that change was made possible by the the ...
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... services, telebanking, teleconferencing, even the complex simulations of virtual reality. This souped-up television will itself be a powerful computer. This, many believe, will be the world's biggest media group, letting consumers tune into anything, anywhere, anytime. The most extraordinary thing about the boom, is that so many moguls are spending such vast sums to develop digital technologies, for the delivering of programs and services which are still largely hypothetical. So what is behind such grand prophecies? Primarily, two technological advances known as digitization (including digital compression), and fibre optics. Both are indispensable to the high-s ...
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... with a bag containing a gas such as helium or hydrogen which is elongated or streamlined to enable easy passage through the air, these Airships could reach speeds up to 10mph with a 5hp steam engine propeller. The first successful airship was that of the French engineer and inventor Henri Giffard, who constructed in 1852 a cigar-shaped, non-rigid gas bag 44 m (143 ft) long, driven by a screw propeller rotated by a 2.2-kw (3-hp) steam engine. He flew over Paris at a speed of about 10 km/hr (about 6 mph). Giffard's airship could be steered only in calm or nearly calm weather. The first airship to demonstrate its ability to return to its starting place in a li ...
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... cause an incorrect calculation or even program failure. Typically, in scenarios of this nature, computers do one of two things: freeze up and/or shut down. Date computation functions are used on millions of software applications, thus affecting millions of computers world-wide. It not only affects calculations for interest rates, inventories, or insurance policies, but every major aspect of our modern economic infrastructure. Government agencies, businesses, and financial institutions use software applications that contain date computation functions. The following types of organizations would be affected: utilities, transportation, manufacturing, banking, financ ...
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... Other features include a 3.9 GB hard disk and an optional DVD module for $150. Sub-notebooks such as IBM Think Pad 600 packs a high-end punch into a 6.5-pound travel weight, including a Pentium II/266 CPU, a 13.3-TFT screen, and a 3.9 GB hard disk. The unit can take a CD-ROM, DVD, or floppy disk drive internally ideal for those who need supreme portability and don't want to deal with external drives. It lasted an impressive 3:12 on our test. For the road warrior principally concerned with weight, and battery life, there is still no better option then the IBM ThinkPad 560x. The system came with a Pentium MMX/233, an 12.1 inch TFT panel, a 2GB disk, a ...
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... not copied, and the whole industry inflates. There are two categories of intellectual property. The first one is composed of writing, music, and films,which are covered by copyright. Inventions and innovations are covered by patent. These two categories have covered for years many kinds of work with little or no conflict. Unfortunately, it is not that easy when dealing with such a complex matter as computer software. When something is typed on a computer, it is considered writting, as it is all written words and numbers. However, when executed by the computer, it functions like an invention, performing a specific task as instructed by the user. Thus, software f ...
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... the street, the same street you have always walked down. One day, you see a big wooden or metal box with wires coming out of it sitting on the sidewalk where there had been none. Many people won't even notice. Others might say, "Oh, a box on the street.". A few might wonder what it does and then move on. The hacker, the true hacker, will see the box, stop, examine it, wonder about it, and spend mental time trying to figure it out. Given the proper circumstances, he might come back later to look closely at the wiring, or even be so bold as to open the box. Not maliciously, just out of curiosity. The hacker wants to know how things work.(8) Hackers truly a ...
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... the hacker tries to bypass this anyway he knows how to and tries to gain access to the system. Why do they do it, well lets go to a book and see "Avid young computer hackers in their preteens and teens are frequently involved in computer crimes that take the form of trespassing, invasion of privacy, or vandalism. Quite often they are mearly out for a fun and games evening, and they get entangled in the illegal use of their machines without realizing the full import of what they are doing", I have a hard time believing that so lets see what a "hacker" has to say about what he does "Just as they were enthraled with their pursuit of information, so are we. The thr ...
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