Вопрос № 911616 - Английский язык

Прочитайте текст и заполните пропуски подходящими по смыслу словами.
A modem’s speed is measured in bits per second (bps). A 14.4 modem 1_______ data at 14,400 bits per second. A 28.8 modem is twice as fast, sending and receiving 2_______ at a rate of up to 28,800 bits per second.
Many things can interfere with the speed of a file transfer. These can range from excessive line 3_______ on the telephone line, the speed of the web server from which you are downloading files, the number of other people trying to access the same file and the overall traffic on the 4_______.

Прочитайте текст и заполните пропуски подходящими по смыслу словами.
Telephone lines were designed to carry the human 1_______, not electronic data from a computer. Modems were invented to convert 2_______ computer signals into a form that allows them to travel over the 3_______ lines. Those are the scratchy sounds you hear from a modem’s speaker. A modem on the other end of the line can understand it and 4_______ the sounds back into digital information that the computer can understand. By the way, the word modem stands for MOdulator/DEModulator.

Прочитайте текст и ответьте на вопрос:
What is optic-electronic scanner used for?
The purpose of the input hardware is to collect data and convert it into a form suitable for computer processing. The most common input device is a keyboard. It looks very much like a typewriter. The mouse is a hand held device connected to the computer by small cable. As the mouse is rolled across the mouse pad, the cursor moves across the screen. When the cursor reaches the desired location, the user usually pushes a button on the mouse once or twice to signal a menu selection or a command to the computer.
The light pen uses a light sensitive photoelectric cell to signal screen position to the computer. Another type of input hardware is optic-electronic scanner that is used to input graphics as well as typeset characters. Microphone and video camera can be also used to input data into the computer. Electronic cameras are becoming very popular among the consumers for their relatively low price and convenience.

Прочитайте текст и ответьте на вопрос:
What is CD-ROM used for?
The purpose of storage hardware is to store computer instructions and data in a form that is relatively permanent and retrieve when needed for processing. Storage hardware serves the same basic functions as do office filing systems except that it stores data as electromagnetic signals. The most common ways of storing data are hard disk, floppy disk and CD-ROM.
Hard disk is a rigid disk coated with magnetic material, for storing programs and relatively large amounts of data.
Floppy disk (diskette) – thin, usually flexible plastic disk coated with magnetic material, for storing computer data and programs.
CD-ROM (compact disc read only memory) is a compact disc on which a large amount of digitized read-only data can be stored.

Прочитайте текст и ответьте на вопрос:
What is modem used for?
The purpose of output hardware is to provide the user with the means to view information produced by the computer system. Information is output in either hardcopy or softcopy form. Hardcopy output can be held in your hand, such as paper with text (words or numbers) or graphics printed on it. Softcopy output is displayed on a monitor.
Monitor is a component with a display screen for viewing computer data, television programs, etc.
Printer is a computer output device that produces a paper copy of data or graphics.
Modem is an example of communication hardware – an electronic device that makes possible the transmission of data to or from computer via telephone or other communication lines.

Прочитайте текст и ответьте на вопрос:
What are the computer programs used for?
A computer to complete a job requires more than just the actual equipment or hardware we see and touch. It requires software – programs for directing the operation of a computer or electronic data.
Software is the final computer system component. These computer programs instruct the hardware how to conduct processing. The computer is merely a general-purpose machine which requires specific software to perform a given task. Computers can input, calculate, compare, and output data as information. Software determines the order in which these operations are performed.
Programs usually fall in one of two categories: system software and applications software.