Computer

“ It can also “learn” to play a mediocre game of chess.
If we investigate the workings of a digital computer, we find much to remind us of the human brain. First is the obvious similarity of on-off, yes-no operation. This implies a power source, usually electrical, and a number of two-position switches. The over-all configuration of the classic computer resembles, in principal if not physical appearance, that of the human brain and its accessories.
As we have learned, the electronic computer has an input section, a control, an arithmetic (or logic) section, a memory, and an output. ”

“ The Academic Computer It was inevitable that the computer invade, or perhaps “infiltrate” is the better word, our education system. Mark I and ENIAC were university-born and -bred, and early research work was done by many institutions using computers. A logical development was to teach formal courses in using the computer. While application of the machine in mathematical and scientific work came first, its application to business and to the training of executives for such use of the computer was soon recognized. ”

“ If you've never programmed a computer, you should. There's nothing like it in the whole world. When you program a computer, it does exactly what you tell it to do. It's like designing a machine -- any machine, like a car, like a faucet, like a gas-hinge for a door -- using math and instructions. It's awesome in the truest sense: it can fill you with awe. ”

“ If a machine can read, why can’t it understand verbal input 56as well? Lazy computer engineers have pushed this idea, and the simplest input system of all is well on the way to success. Computers today can recognize numbers and a few words, and the Japanese have a typewriter that prints out the words spoken to it! These linguistic advances that electronic computers are making are great for everyone, except perhaps the glamorized programmer, a new breed of mathematical logician whose services have been demanded in the last few years. ”

“ For some strange reason, few of us become alarmed at the news of a computer solving complex mathematics, translating a book, or processing millions of checks daily, but the idea of a computer controlling a factory stimulates union reprisals, editorials in the press against automation, and much general breast-beating and soul-searching. Perversely we do not seem to mind the computer’s thinking as much as we do its overt action. ”

“ We can begin to investigate the question of computer intelligence by again looking up a definition. The word “compute” means literally to think, or reckon, with. Early computers such as counting sticks, the abacus, and the adding machine are obviously something man thinks with. Even though we may know the multiplication tables, we find it easier and safer to use a mechanical device to remember and even to perform operations for us. ”

“ If we do not interact with the computer via a primary programming language (Assembler or machine language) , I believe that it is impossible to find the principle of work of the computer either from in- or outside of it. ”

“ The digital computer, then, is not merely a counting machine, but a decision-maker as well. It can decide whether something should be added, subtracted, or ignored. Its logical manipulations can by clever circuitry be extended from AND to OR, NOT, and NOR. It thus can solve not only arithmetic, but also the problems of logic concerning foxes, goats, and cabbages, or cannibals and missionaries that give us human beings so much trouble when we encounter them. ”

“ Serial Operation—Digital computer operation in which all digits are handled serially.
Storage—Use of drums, tapes, cards, and so on to store data outside the computer proper.
The Computer’s Parts Looking at computers from a distance, we are vaguely aware that they are given problems in the form of coded instructions and that through some electronic metamorphosis this problem turns into an answer that is produced at the readout end of the machine. There is an engineering technique called the “black box” concept, in which we are concerned only with input to this box and its output. ”

“ The computer chip itself is a conceptual accomplishment beyond anything we can conceive of. The depth encountered in the functioning of the digital computer-from the whole it represents to its smallest components endowed with functions integrated in its operation-is of a scale to which we have no intuitive or direct access. Computers are not a better abacus. Some computer users have even noticed that they are not even a better cash register. They define an age of semiotic focus, in that symbol manipulation follows language processing. ”

“ We can see that the digital machine with its flexibility, accuracy, and powerful logical capability is the fair-haired one of the computer family. Starting with a for abacus, digital computer applications run through practically the entire alphabet. Its take-over in the banking field was practically overnight; it excels as a tool for design and engineering, including the design and engineering of other computers. Aviation relies heavily on digital computers already, from the sale of tickets to the control of air traffic. ”

“ Their implementation of modern computer control may be made easier because their industries are newer and do not represent such a long-established and expensive investment in hard-to-modify existing equipment.
Basically, at least, computer control is simple and can be compared to the feedback principle that describes many physical systems including the workings of our own bodies. In practice, the computer can be put in charge of producing something, and by sampling the output of its work can constantly make corrections or improvements that are desired. ”

“ Many computer experts strongly recommend against buying a computer first and then shopping for the software packages. So identify your needs and select the software packages or materials that will help you do what you want to with your computer. Then find the hardware to run the programs. ”

“ On left is an array of 16 analog computers; at right is a large digital data-processing system.
The facility can perform scientific and business tasks simultaneously.
The dictionary also gives us a good clue to the digital computer: “Digital.—Of the fingers or digits.” A digital machine deals in digits, or discrete units, in its calculations. For instance, if we ask it to multiply 2 times 2, it answers that the product is exactly 4. A slide rule, which we have said is an analog device, might yield an answer of 3.98 or 4.02, depending on the quality of its workmanship and our eyesight. ”

“ Each composition will bring the thrill of a new, fresh experience, unless we choose to go back in the computer’s memory for the old music.
The computer will do far more in the home than dream up random music for listening pleasure. The recorded telephone answerer will give way to one that can speak for us, making appointments and so on, and remembering to bring us up to date when we get home. A small computer to plug in the wall may do other things like selecting menus and making food purchases for next week, planning our vacations, and helping the youngsters with their homework. ”

“ The Designing Computer It seems strange that the computer was a bookkeeper and clerk for years before anyone seriously considered that it might be an engineer as well, yet the men who themselves designed the computer were loath to use it in their other work. Part of this resistance stems from the high premium placed on the creativity of research and design work. The engineer uses science in his work, to be sure, but he professes to use it as an artist, or with the personal touch of, say, a brewmaster. ”

“ Notable improvements in the general-purpose computer are doing much to further its use as a technical tool. Present machines do jobs as varied as the following: personnel records, inventorying, pattern determination, missile system checkout, power-plant control, system simulation, navigation, ballistic trajectory computations, and so on. Special computers are also provided now for the engineer ”

“ To further compound excuses for the foot-dragging engineer, there was a difference in needs in payroll computation and scientific mathematical calculation. Commercial computers are designed for a high rate of input and output, with a relatively slow arithmetic going on inside. The engineer, on the other hand, might need only several minutes of computer time, but it could take him a couple of days to put the problem into a form the machine could digest. ”

“ The automated group education system of the System Development Corporation is made up of the following components: a digital computer to control and select the material presented and to analyze responses, a magnetic tape storage unit, a typewriter for printing out data analysis, a slide projector and screen for presenting educational materials, and individual desks with keyboards for the students’ responses. ”

“ These analogies in nature are particularly fitting, since the analog computer is at its best in representing a physical system. While we do not generally recognize such homely examples as computers, automatic record-changers, washing machines, electric watt-hour meters, and similar devices are true analogs. ”

“ Perhaps of the greatest importance is the assigning to the machine functions closer to the roots 249of all these things. Rather than simply read or translate language, for example, the computer seems destined to improve on it. The same applies to the process of teaching and to the storage and retrieval of data. The electronic computer has shown that it is not a passive piece of equipment, but active and dynamic in nature. It will soon be as much a part of the classroom and library as books; one day it may take the place of books themselves. ”

“ The Digital Counter The digital computer was first on the scene and it appears now that it will outnumber and perhaps outlive its analog relative. A simple computer of this type is as old as man, though it is doubtful that it has been in use that long. ”

“ Others furnish information in typed or printed form, punched cards, or a display on a tube or screen.
Like us, the computer can be frustrated by a task beyond its capabilities. A wrong command can set its parts clicking rapidly but in futile circles. Early computers, for example, could be panicked by the order to divide a number by zero. The 10solution to that problem of course is infinity, and the poor machine had a hard time trying to make such an answer good. ”

“ A fertile field for the analog computer from the start was that of industrial process control. Chemical plants, petroleum refineries, power generating stations, and some manufacturing processes lend themselves to control by analog computers. ”

“ Take the works. Take the guy's computer. Take his books. Take his notebooks. Take the electronic drafts of his love letters. Take his Walkman. Take his wife's computer. Take his dad's computer. Take his kid sister's computer. Take his employer's computer. Take his compact disks—they MIGHT be CD-ROM disks, cunningly disguised as pop music. Take his laser printer—he might have hidden something vital in the printer's 5meg of memory. Take his software manuals and hardware documentation. Take his science-fiction novels and his simulation-gaming books. ”

“ You can also use a computer as an up-to-date source for communication, linking you to banks of information that are available almost instantaneously from public and private online information sources. With the computer hooked up to the telephone, you can get information quickly, receive it visually, and record it in detail if you wish. ”

“ Since this was based on 850,000 total loans of her books from thousands of schools and libraries, the bookkeeping was possible only with an electronic computer.
Computers are beginning to take over control of factories, steel mills, bakeries, chemical plants, and even the manufacture of ice cream. In scientific research, computers are solving mathematical and logical problems so complex that they would go forever unsolved if men had to do the work. ”

“ Our lecturer had raised the point that preliminary investigation of a computer system is vital before any seizure is undertaken. It's vital to understand how many machines are in there, what kinds there are, what kind of operating system they use, how many people use them, where the actual data itself is stored. To simply barge into an office demanding "all the computers" is a recipe for swift disaster. ”

“ Surely, progress has been made and improvements continue to be designed into modern analog computers. Repetitive operations can now be done automatically at high speed, and the computer even has a memory. ”

“ Computers are a vital part of automation, and already they are running production lines and railroads, making mechanical drawings and weather predictions, and figuring statistics for insurance companies as well as odds for gamblers. Electronic machines permit the blind to read a page of ordinary type, and also control material patterns in knitting mills. This last use is of particular interest since it represents almost a full circle in computer science. ”

“ No matter what kind of computer a person is using, theirs is always the best and most efficient of them all. Posting articles asking questions like What computer should I buy? An Atari ST or an Amiga? will lead only to fervent arguments over the merits and drawbacks of each brand. Don't even ask The Net—-go to a local user group, or do some research of your own like reading some magazine reviews. Trying to say one computer is somehow better than another is a moot point. ”