... was faced with a problem. How could the country communicate after a nuclear war? The Pentagon's Advanced Research Projects Agency, ARPA, had a solution. They would create a non-centralized network that linked from city to city, and base to base. The network was designed to function when parts of it were destroyed. The network could not have a center because it would be a primary target for enemies. In 1969, ARPANET was created, named after its original Pentagon sponsor. There were four supercomputer stations, called nodes, on this high speed network. ARPANET grew during the 1970's as more and more supercomputer stations were added. The users of ...
... On a camshaft lobe there rests a lifter. A lifter is cylinder shaped and pushes up on a push rod when the lobes are rotating. A push rod, which is connected to a rocker arm, then "rocks" down on a spring that in turn pushes open a valve. This all happens due to the rotation of the camshaft which is geared to the crankshaft (which is connected to the pistons) which is all part of the four stroke cycle. The four-stroke cycle starts with the intake stroke. On the intake stroke, the piston moves down from its top dead center or the farthest "up" position creating a partial vacuum which draws in the fresh air-fuel mixture from the open intake valve. Think of t ...
... A cell phone can communicate on 1,664 channels. Cell phones also operate within cells and they can switch cells as they move around. Cells give cell phones incredible range. A walkie-talkie can transmit perhaps a mile. A CB radio, because it has much higher power, can transmit perhaps 5 miles. Someone using a cell phone, on the other hand, can drive clear across a city and maintain a conversation the entire time. Cells are what give a cell phone its incredible range (Anonymous #2). The genius of the cellular system is the realization that a city can be chopped up into small cells, and that the cells allow extensive frequency reuse across a city. Frequency reu ...
... when running graphics and publishing applications. You can understand why the education market is almost entirely apple based. Recent surveys confirm that from kindergarten through college, Apple has cornered the market in education, and remains number one in this U.S. market. Apple Macintosh computers account for 60% of the 5.9 million machines in U.S. schools for the 1995-96 school year. Only 29% of schools use the Microsoft/Intel platform, and DOS only accounts for a measly 11%. Also it was reported that 18.4% of 4 year college students own the Macintosh. 55% of college students own a computer, and Apple's in the lead for that market too! The reason Apple ...
... it is William Gibson and the cyberpunks who have carried out some of the most important mappings of our present moment and its future trends during the past decade. The present, in these mappings, is thus viewed from the persceptive of a future that is visible from within the experiences and trends of the current moment, from this perpscetive, cyberpunk can be read as a sort of social theory. Chapter 1 Internet history The Internet is a network of computer networks, the most important of which was called ARPANET(Advanced Research Projects Agency NETwork), a wide area experimental network connecting hosts and terminal servers together. Rules were set up to s ...
... on. The first chip made of semiconducitve material or silicon was invented in 1958 by Jack Kilby of Texas Instruments. Now we have the major elements needed to produce a CPU. In 1965 a company by the name of Intel was formed and they began to produce CPU's shortly thereafter. Gordon Moore, one of the founders of Intel, predicted that the number of transistor placed on each CPU would double every 18 months or so. This sounds almost impossible, however this has been a very accutate estimation of the evolution of CPUs. Intel introduced their first processor, a 4004, in November of 1971. This first processor had a clock speed of 108 kilohertz and 2,300 transi ...
... the inspiration of free-spirited hackers, it in fact was born in Defense Department Cold War projects of the 1950s.2 The United States Government owns the Internet and has the responsibility to determine who uses it and how itis used. The government must control what information is accessible from its agencies. This material is not lawfully available through the mail or over the telephone, there is no valid reason these perverts should be allowed unimpeded on the Internet. Since our initiative, the industry has commendably advanced some blocking devices, but they are not a substitute for well-reasoned law.4 Because the Internet has become one of the bigges ...
... and as well as everyday life. There is little we can do with a computer interface device that will preserve our identity. Governments acting as a global police force protecting us from ourselves can easily monitor the electronic trail of commands and transactions. Perhaps the Luddites could see farther into the future than anyone suspected. With regards to the downfall of technology and the role it would play on people's lives, as they became dependent upon technology for survival. Let's take for example the huge technological dilemma of the fast approaching twenty-first century; the issues surrounding Y2K. It has been feared that people's lives will be total ...
... to be terminated and bam! There goes your credit card. This bug also affects other things in the city. For example, if a train is running on a track and the power cuts out, then the gates wont go down and people will be in a lot of trouble. (Also, what happens if the power goes out in a hospital? (Also see “WHAT IS Y2K” later on) Food is one essential thing that is crucial to survival and many people think that we may need lots of canned and dry goods. As in any crisis situation, some believe that the worst will happen: We will all die, go to war, or the world will explode, etc. Then again, others think that maybe we should be prepared just in case all of ...
... administrative tasks, such as attendance records and grading. While these tasks are very important, they only show a small part of what technology can do for a school. Technology must go further than simply keeping attendance; it must focus on keeping students interested and productive. Since computers and the Internet have expanded in such a way in which education can be delivered to students, it is currently possible to engage in "distance education through the Internet. Distance education involves audio and video links between teachers and students in remote areas. Video conferencing allows groups to communicate with each other. Desktop video conferencing ...
