... 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 the drive can be quite far away from the disk surface (a few millimeters com ...
... However, this data sharing can allow a virus to spread rapidly to computers that have otherwise been protected from external contamination. 3. Telecommunications: also known as a Wide Area Network, this entails the connection of computer systems to each other via modems, and telephone lines. This is the vector most feared by computer users, with infected files being rapidly passed along the emerging information super-highway, then downloaded from public services and then used, thus infecting the new system. 4. Spontaneous Generation: this last vector is at the same time the lea ...
... fee per month. The connection conveniently includes unlimited access to over a million web sites twenty-four hours a day, seven days a week. Since the Internet can be accessed by millions of people all time, it would be a great incentive for businesses. The Internet can help businesses in number of extraordinary ways. First, the Internet is an excellent way to make business information available to possible consumers. Say a person hears about a product that your business produces and would like to know more information about that product. Well, through Internet access, that person can easily locate your business web site and browse through the information needed. ...
... deluged by data: the sense of an \"information overload.\" One of the first attempts to represent this kind of information overload appears in Ted Mooney\'s 1981 novel, Easy Travel to Other Planets. There, Mooney describes \"A Case of Information Sickness\" in the following terms: If information was once considered the solid ground, the \"factual\" basis, on which to make decisions and take actions, it no longer seems to be so. Indeed, information no longer seems to be solid at all. Not only does it not provide a grounding, a foundation, from which to see, know, or act, it comes to be seen as obscuring our vision, our attempts at knowledge, our ...
... to read. Procedures help to make programs shorter, and thus easier to read, by replacing long sequences of statements with one simple procedure call. By choosing goo procedure names, even the names of the procedures help to document the program and make it easier to understand. Programs are easier to modify. When repeated actions are replaced by one procedure call, it becomes much easier to modify the code at a later stage, and also correct any errors. By building up the program in a modular fashion via procedures it becomes much easier to update and replace sections of the program at a later date, if all the code for the specific section is in a particular mo ...
... . . . . . . . . . . . . . . . . . . . . . . 6 THE HISTORY OF VIRTUAL REALITY . . . . . . . . . . . . . . . . . . . . . 7 Virtual Reality in the Past . . . . . . . . . . . . . . . . . . . . 7 Virtual Reality in the Present. . . . . . . . . . . . . . . . . . . 9 Virtual Reality in the Future . . . . . . . . . . . . . . . . . . . 10 THE SOCIAL IMPLICATIONS OF VIRTUAL REALITY . . . . . . . . . . . . . . . 11 New Rules of Behavior . . . . . . . . . . . . . . . . . . . . . . . 11 Adverse Effects . . . . . . . . . . . . . . . . . . . . . . . . . . 12 CONCLUSION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 REFERENCES ...
... Hackers: Bright young men of disheveled apperance,Often with sunken, glowing eyes.Seen sitting at computer consoles, their arms tense and waitingTo fire their fingers which are already posed to strike at the buttons and keys on which their attention seems to dice.They work until they nearly drop,twenty or thirty hours at a time if possible.They sleep on cots near the computer,but only a few hours-then back to the console, or printouts.Their crumpled clothes, their unwashed, unsheven faces, and uncombed hair, testify that they are oblivious to their bodies and to the word in which they move. They exist, at least when so gaged, only through and for the computers. Th ...
... Solar Solar should only generate 15% because it is not a reliable power source: the sun does not shine 24 hours a day, 7 days a week in one spot. If the weather does change and the panels can’t generate the power required the nuclear plant/s can fluctuate to cope with the power needs of the general population. Solar power uses an infinite resource so it is worthwhile making use of. Wind Wind “farms” should be used in conjunction with Solar plants as more power will be generated with the wind and sun combined. It is an environmentally friendly power source however it is very costly to set up therefore it should only produce 10% of the power needed. Depend ...
... As an example of the type of incorrect calculation which can be produced due to this problem, when a computer sorts dates by year, “00” could be identified as an earlier date than “99”. A financial spreadsheet or projection therefore might show the financial trend for the 1999-2000 period running backwards rather than forwards. Insurance company computers might report a policy running through the year 2001 as having instead expired in 1901. A bank computer calculating the interest for a financial instrument for the six year period of 1995 through the year 2000 might instead calculate the interest for the period of 1900 through 1995, for a ninety-six y ...
... are taken, the Internet should prove safe. The Internet, simply put, is a bunch of computers that can communicate with one another via telephone lines, optical fibers, radio and satellite links. If one computer goes down the others are linked together to bypass the defective/destroyed computer and get the information to its destination. It's much like a spider web. You can cut many of the strands and it still hold together. This is how the phrase "World Wide Web" came into existence. The Internet has grown and improved over the years; from a cold war project, to a medium for exchanging ideas and information worldwide. As a cold War project, the Inte ...
