Вопрос № 223151 - Английский язык

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Hard disk drive is the mechanism that reads and writes data on a hard disk. Hard disk drive has many inflexible platters (discs) coated with magnetic material. Read/write heads can record computer data on these discs. A typical hard disk rotates at 3,600 revolutions per minute, and the read/write heads ride over the surface of the disk on a cushion of air 25 micron deep. Hard disk drives (HDDs) for PCs generally have seek times of about 12 milliseconds or less. Hard disk drives are sometimes called Winchester drives. Winchester is the name of one of the first popular hard disk drive technologies developed by IBM in 1973.
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How are hard disk drives sometimes called?

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Hard disk drive is the mechanism that reads and writes data on a hard disk. Hard disk drive has many inflexible platters (discs) coated with magnetic material. Read/write heads can record computer data on these discs. A typical hard disk rotates at 3,600 revolutions per minute, and the read/write heads ride over the surface of the disk on a cushion of air 25 micron deep. Hard disk drives (HDDs) for PCs generally have seek times of about 12 milliseconds or less. Hard disk drives are sometimes called Winchester drives. Winchester is the name of one of the first popular hard disk drive technologies developed by IBM in 1973.
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How are hard disk drives sometimes called?

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Computers store information on disks in files. A file is a collection of related information such as a computer program or the text of a letter.
Each file is given a unique name, and each filename is stored in a directory. To find out about the files in a directory, use the MS-DOS command DIR.
When referring to a file, you must use a file specification. This consists of a pathname, a filename and an extension (if there is one). As an example, to reference a file on drive B: called FRED.BAS (where the default drive is ‘A’) the correct file specification would be:
B:\FRED.BAS
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How do you find out about the files?

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You must tell the computer which directory it is to use as its current working directory - that is, the directory you wish to work in. Do this with the CHANGE DIRECTORY command (CD). The current working directory is often called the default directory.
To change the current directory use CD followed by the pathname of the directory you wish to use. For example:
A>  CD\SUB1\SUB3
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What is the current working directory?

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Under MS-DOS 3.20 you can create and access names for many different types of devices - just as if they are physical disk drives installed in your system. The devices you can access as disks are:
- internal floppy-disk drives
- external floppy-disk drives
- additional drive identifiers for floppy-disk drives, defined by DRIVER.SYS
- hard-disk drives of many different sizes
- RAM disks created in the computer’s memory
- directories that  have  been given logical  drive names using SUBST
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Can you create and access names for all devices in MS-DOS 3.20 system?

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Basically, the Internet is a network of people and information, linked together by telephone lines which are connected to computers. In fact, more than 100,000 independent networks - public and private - are currently connected to form this vast global communications system. This is the road of the information superhighway.