Вопрос № 223141 - Английский язык

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Computer keyboard is the set of typewriter-like keys that enables you to enter data into a computer. Computer keyboards are similar to electric-typewriter keyboards but contain additional keys. The keys on computer keyboards are often classified as follows:
alphanumeric keys - letters and numbers
punctuation keys - comma, period, semicolon, and so on.
special keys - function keys, control keys, arrow keys, Caps Lock key, and so on.
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What are computer keyboards similar to?

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Computer keyboard is the set of typewriter-like keys that enables you to enter data into a computer. Computer keyboards are similar to electric-typewriter keyboards but contain additional keys. The keys on computer keyboards are often classified as follows:
alphanumeric keys – letters and numbers;
punctuation keys – comma, period, semicolon, and so on;
special keys – function keys, control keys, arrow keys, Caps Lock key, and so on.
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What are computer keyboards similar to?

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There is no standard computer keyboard, although many manufacturers imitate the keyboards of PCs. There are actually three different PC keyboards: the original PC keyboard, with 84 keys; the AT keyboard, also with 84 keys; and the enhanced keyboard, with 101 keys. The three differ somewhat in the placement of function keys, the Control key, the Return key, and the Shift keys.
In addition to these keys, IBM keyboards contain the following keys: Page Up, Page Down, Home, End, Insert, Pause, Num Lock, Scroll Lock, Break, Caps Lock, Print Screen.
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How many keys has enhanced keyboard?

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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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Microprocessor is a silicon chip that contains a CPU. The terms microprocessor and CPU are used interchangeably. At the heart of all personal computers sits a microprocessor.
Microprocessors have basic characteristics:
Computational bandwidth: The number of bits processed in a single instruction.
Speed: Given in megahertz (MHz), the speed determines how many instructions per second the processor can execute.
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What is a microprocessor?

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Hard disks can be divided into one to four separate sections, called partitions. Partitions separate your hard disk into individual areas, and each partition may contain a different operating system.
To prepare your hard disk for the MS-DOS operating system, you must create a partition for MS-DOS, called a DOS partition. You can create a DOS partition on your hard disk by using a menudriven utility called fdisk. You must use fdisk if you want to do one of the following:
- Create a primary MS-DOS partition
- Create an extended DOS partition
- Change the active partition
- Delete a DOS partition
- Display partition information
- Review or modify the configuration of another hard disk on your computer
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What must you create to prepare your hard disk for the MS-DOS operating system?