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Most computer users want to know how the computer mouse works.
A．Right
B．Wrong
C．Not mentioned
答案
更多“Most computer users want to know how the computer mouse works.A．RightB．WrongC．Not mentione”相关的问题
第1题
根据下列文字，回答 16～22 题。
第 16 题 Most computer users want to know how the computer mouse works.
第2题
Most computer users have symptoms of CVS because of ______.
A．dry, red, or burning eyes and blurred or double vision
B．glare, poor lighting and improper workstation setup
C．not keeping their monitor two feet away from them
D．not using a computer that protects their eyes
第3题
A．previously
B．Subsequently
C．Consequently
D．Successively
第4题
The underlined word "hacker" (Para. 1) most probably means "______".
A．highly recognisable names behind many of the computer technologies used today
B．the negative connotation of those computer users
C．a game, employing the tools that are readily available via the Internet
D．People who break into computer systems
第5题
The underlined word “hacker” (Para.1) most probably means “______ “.
A．highly recognizable names behind many of the computer technologies used today
B．the negative connotation of those computer users
C．a game, employing the tools that are readily available via the Internet
D．People who break into computer systems
第6题
Researchers at Xerox designed such a system. But Apple was the first to make it popular. Today most personal computers use icons. Steve Wozniak and Steve Jobs tried to sell their ideas to other companies. They were rejected. But soon they found investors. Apple began to sell shares to the public in nineteen-eighty. The company became worth more than one-thousand-million dollars.
In nineteen-eighty-one, International Business Machines began to sell a personal computer that many people bought. I. B. M. was the biggest computer company in the world. But Apple was known for its creativity. In nineteen-eighty-four, it released the first Macintosh. These computers were simple to use.
Over the years, Apple gained a following of loyal users. But then lower-priced computers appeared. These used the Windows operating system made by Microsoft. Most personal computers today use Windows. Apple does not compete with makers of low-cost computers. Many of its computers are designed for special uses like video and music production. The brain of a computer is the processor. For years, Apple used processors made by Motorola. In two-thousand-and-three, Apple joined with I. B. M. to create a faster processor. But Apple still has only a small share of the computer market.
Now, one of its most popular products is the iPod. This is a small music player. It can store up to one-thousand songs. Apple says it sold more than eight-hundred-thousand iPods in the three months ending in March. Apple reported a profit of forty-six million dollars for the period. It says the iPod greatly helped sales.
What does the passage mainly talk about？
A．Apple Computer Company.
B．Cooperation between Apple and IBM.
C．Apple's new product iPod.
D．The history of P. C..
第7题
&8226;Look at the statements below and the following Computer Types.
&8226;Which type of computer (A, B, C or D) does each statement (1-7) refer to？
&8226;For each statement (1-7), mark one letter (A, B, C or D) on your Answer Sheet.
&8226;You will need to use some of these letters more than once.
A Microcomputer
A microcomputer is a desktop or notebook size computing device that uses a microprocessor as its Central Processing Unit, or CPU. Microcomputers are also called Personal Computers (PCs), home computers, small business computers, and micros. The smallest, most compact are called laptops. When they first appeared, they were considered single user devices, and they were capable of handling only four, eight, or 16 bits of information at one time. More recently the distinction between microcomputers and large, mainframe. computers (as well as the smaller mainframe. type systems called minicomputers) has become blurred, as newer microcomputer models have increased the speed and data handling capabilities of their CPUs into the 256 bit. or even much more bit multi-user range.
B Minicomputer
A minicomputer is a mid-level computer built to perform. complex computations while dealing efficiently with a high level of input and output from users connected via terminals Minicomputers also frequently connect to other minicomputers on a network and distribute processing among all the attached machines. Minicomputers are used heavily in transaction processing applications and as interfaces between mainframe. computer systems and wide area networks.
C Mainframe. Computer
A mainframe. computer is a high level computer designed for the most intensive computational tasks. Mainframe. computers are often shared by multiple users connected to the computer via terminals. The most powerful mainframes, called supercomputers, perform. highly complex and time consuming computations and are used heavily in both pure and applied research by scientists, large businesses, and the military.
D Supercomputer
In computer science, supercomputers are large, extremely fast, and expensive computers used for complex or sophisticated calculations. Typically they are machines capable of pipelining instruction execution and providing vector instructions. A supercomputer can, for example, perform. an enormous number of calculations required to draw and animate a moving spaceship in a motion picture. Supercomputers are also used for weather forecasting, large scale scientific modeling and oil exploration and so on and so like.
They are often used for jobs like engineering design and testing, serious decryption, economic forecasting, etc.
第8题
Computer Needs Emotion
The next big breakthrough in artificial intelligence could come from giving machines not just more logical capacity, but emotional capacity as well.
Feeling aren't usually associated with inanimate(无生命的) machines, but Posalind Picard, a professor of computer technology at MIT, believes emotion may be just the thing computes need to work effectively. Computers need artificial emotion both to understand their human users better and to achieve self-analysis and self-improvement, says Picard.
"If we want computers to be genuinely intelligent, to adapt to us, and to interact naturally with us, then they will need the ability to recognize and express emotions, to have emotions, and to have what has come to be called emotional intelligence. " Picard says.
One way that emotions can help computers, she suggests, is by helping keep them from crashing. Today's computers produce error messages, but they do not have a "gut feeling" of knowing when something is wrong or doesn't make sense. A healthy fear of death could motivate a computer to stop trouble as soon as it starts. On the other hand, self-preservation would need to be subordinate to service to humans. It was fear of its own death that promoted RAL, the fictional computer in the film 2002:A Space Odyssey, to extermine (消灭) most of its human associates.
Similarly, computers that could "read" their users would accumulate a store of highly personal information about us-not just what we said and did, but what we likely thought and felt.
"Emotion not only contributes to a richer quality of interaction, but they directly impact a person's ability to interact in an intelligent way, " Picard says, "Emotional skills, especially the ability to recognize and express emotions, are essential for natural communication with humans. "
According to Picard, emotion intelligence is necessary to computers because ______.
A．it can make computers analyze the information more efficiently
B．it can help to eliminate the computers' innate problems
C．it can improve the mechanic capacity of computers
D．it can make computers achieve a better understanding of human users
第9题
Then came the 20th century and its burst of technology. Suddenly people were talking across oceans, flying across continents, hearing broadcasts that reverberated around the planet. Language spread faster than ever. The world wars carried American and British soldiers around the world, pollinating English as they went. When World War Ⅱ ended, the English language was barreling (高速行驶) forward on the shoulders of American capitalism — McDonald's and Coca-Cola, Rambo and MTV, munitions (军火) and computer technology.
Currently, about 80 percent of the information stored on computer systems worldwide is in English. Two-thirds of the world's science writing is in English, and English is the main language of technology, advertising, media, international airports, and air traffic controllers. Today there are more than 700 million English users in the world, and over half of these are non-native speakers, constituting the largest number of non-native users than any other language in the world.
What is the main topic of this passage？
A．The expansion of English as an international language.
B．The number of non-native users of English.
C．The French influence on the English language.
D．The use of English for science and technology.
第10题
Computer Mouse
The basic computer mouse is an amazingly clever invention with a relatively simple design that allows us to point at things on the computer and it is very productive. Think of all the things you can do with a mouse like selecting text for copying and pasting (涂), drawing, and even scrolling on the page with the newer mice with the wheel. Most of us use the computer mouse daily without stopping to think how it works until it gets dirty and we have to learn how to clean it. We learn to point at things before we learn to speak, so the mouse is a very natural pointing device. Other computer pointing devices include light pens, graphics (图形) tablets and touch screens, but the mouse is still our workhorse.
The computer mouse was invented in 1964 by Douglas Englehart of Stanford University. As computer screens became more popular and arrow keys were used to move around a body of text, it became clear that a pointing device that allowed easier motion through the text and even selection of text would be very useful. The introduction of the mouse, with the Apple Lisa computer in 1983, really started the computer public on the road to relying on the mouse for routine (常规) computer tasks.
How does the mouse work？ We have to start at the bottom, so think upside down for now. It all starts with the mouse ball. As the mouse ball in the bottom of the mouse rolls over the mouse pad, it presses against and turns two shafts (轴). The shafts are conneected to wheels with several small holes in them. The wheels have a pair of small electronic light-emitting devices called light-emitting diodes (LED) mounted on either side. One LED sends a light beam to the LED on the other side. As the wheels spin and a hole rotates by, the light beam gets through to the LED on the other side. But a moment later the light beam is blocked until the next hole is in place. The LED detects (发现) a changing pattern of light, converts the pattern into an electronic signal, and sends the signal (发信号) to the computer through wires in a cable that goes out the mouse body. This cable is the tail that helps give the mouse its name. The computer interprets the signal to tell it where to position the cursor on the computer screen.
So far we have only discussed the basic computer mouse that most of you probably have or have used. One problem with this design is that the mouse gets dirty as the ball rolls over the surface and picks up dirt. Eventually you have to clean your mouse. The newer optical mice avoid this problem by having no moving parts.
Most computer users want to know how the computer mouse works.
A．Right
B．Wrong
C．Not mentioned
