КАТЕГОРИИ: Архитектура-(3434)Астрономия-(809)Биология-(7483)Биотехнологии-(1457)Военное дело-(14632)Высокие технологии-(1363)География-(913)Геология-(1438)Государство-(451)Демография-(1065)Дом-(47672)Журналистика и СМИ-(912)Изобретательство-(14524)Иностранные языки-(4268)Информатика-(17799)Искусство-(1338)История-(13644)Компьютеры-(11121)Косметика-(55)Кулинария-(373)Культура-(8427)Лингвистика-(374)Литература-(1642)Маркетинг-(23702)Математика-(16968)Машиностроение-(1700)Медицина-(12668)Менеджмент-(24684)Механика-(15423)Науковедение-(506)Образование-(11852)Охрана труда-(3308)Педагогика-(5571)Полиграфия-(1312)Политика-(7869)Право-(5454)Приборостроение-(1369)Программирование-(2801)Производство-(97182)Промышленность-(8706)Психология-(18388)Религия-(3217)Связь-(10668)Сельское хозяйство-(299)Социология-(6455)Спорт-(42831)Строительство-(4793)Торговля-(5050)Транспорт-(2929)Туризм-(1568)Физика-(3942)Философия-(17015)Финансы-(26596)Химия-(22929)Экология-(12095)Экономика-(9961)Электроника-(8441)Электротехника-(4623)Энергетика-(12629)Юриспруденция-(1492)Ядерная техника-(1748) |
Reading practice Section
When your computer is turned off, it is a dead collection of sheet metal, plastic, metallic tracings, and tiny flakes of silicon. When you hit ‘On’ switch, one little burst of electricity — only about 5 volts — starts a string of events that magically brings to life what otherwise would remain an oversize paperweight. At first the PC is still rather stupid. Beyond taking inventory of itself, the newly awakened PC still can't do anything really useful, intelligent. At best it can search for intelligence in the form of operating system that gives structure to the PC’s primitive existence. Then comes a true education in the form of application software — programs that tell it how to do tasks faster and more accurately than we could, a student who has outstripped its teacher. Such intelligence is fragile and short-lived. All those millions of microscopic switches are constantly flipping on and off in time to dashing surges of electricity. All it takes is an errant instruction or a stray misreading of a single chip to send this wonderfully intelligent golem into a state of catatonia or hit the ‘Off’ switch and
of chaos onto our neatly ordered columns of numbers, our carefully made sentences, and our beautifully crafted graphics. Are we playing with power not entirely under our control? A middle-aged woman sat down at a personal computer for the first time in her life. She placed her hands above the keyboard, ready to type — but hesitated. Turning to the instructor, she asked warily: "It won't know what I'm thinking, will it?" Such concerns abound among people whose knowledge of computers comes from movies like ‘2001: A Space Odyssey’ (in which Hal, the computer with the sticky-sweet voice, tries to take control of the spaceship). Terms such as ‘computer anxiety’ and ‘computer phobia’ have entered our language to describe such wariness. Many people try to avoid situations in which they might be forced into contact with computers. Even businesspeople who deal with computers daily may experience a form of cyberphobia — fear of computers. As a result of their fear, some office workers who are cyberphobic suffer nausea, sweaty palms, and high blood pressure. Young people who have grown up with computers may not understand these reactions. What are such people afraid of? Some may worry about the mathematical implications of the word ‘computer’. It seems to suggest that only a person with strong analytical and quantitative skills can use the machine. In fact, as we see more and more often, even very young children whose math skills have yet to form can use computers. Some people are fearful of the computing environment. The movies love to portray old-fashioned, large computer systems — sanitized rooms walled by machines alive with blinking lights and spinning reels; it all looks intimidating. There is a notion that computers are temperamental gadgets and that, once a glitch gets into a computer system, it may wreak all kinds of havoc — from fouling up bank statements to launching nuclear missiles by mistake. Indeed, computer billing and banking errors are problems; however, most errors blamed on computers are the result of mistakes made by people. Computers do not put in the data they must work with, people do. Even so, correcting an error can be frustratingly slow. Many people worry about computers in relation to their jobs. Some people doubt they have the skills to find jobs and keep them in a technological labor market. Many feel that keeping up with the pace of technological change is impossible because it requires costly and continuous
out or left behind. If everyone around you is talking about, living with, and working around computers, how can you keep from revealing your limited understanding?
cause you trouble might do irreparable damage to your financial standing, ending any hopes you might have for owning a home someday. An easily obtainable computerized list might carry personal information that could lead to an invasion of your privacy or at the least, a pile of junk mail. Think of all the forms you have filled out for schools, jobs, doctors, credit services, government offices, and so on. There is scarcely one fact related to you that is not on record in a computer file somewhere. Could unauthorized persons obtain this information? Computer fraud and computer security are not simple issues; they are concerns that society must take seriously. Should we let things work themselves out in the courts? Or, should legislators be encouraged to create laws for society's protection? True or false?
Дата добавления: 2014-12-27; Просмотров: 627; Нарушение авторских прав?; Мы поможем в написании вашей работы! Нам важно ваше мнение! Был ли полезен опубликованный материал? Да | Нет |