Прочитайте текст. A mouse is a small slidable device that users hold and slide around to point at cl...: ответ на тест 1072171 - Английский язык

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A mouse is a small, slidable device that users hold and slide around to point at, click, and sometimes drag objects on the screen in a graphical user interface using a pointer on the screen. Almost all personal computers have a mouse. A mouse can be plugged into a computer rear mouse socket, or as USB (device), or, more recently, may be connected wirelessly via USB antenna or Bluetooth antenna.
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What is a mouse used for?

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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.

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Prior to the wide spread of PCs the computer that could fit on a desk was considered remarkably small. Today the phrase usually indicates a particular style of the computer case. Desktop computers come in a variety of styles ranging from large vertical tower cases to small form factor models that can be tucked behind LCD monitor. In this sense, the term “desktop” refers specifically to a horizontally-oriented case, usually intended to have the display screen placed on top to save space on the desk top. Most modern desktop computers have separate screens and keyboards.

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A laptop computer or simply laptop, also called a notebook computer or sometimes a notebook, is a small personal computer designed for mobility. Usually all of the interface hardware needed to operate the laptop, such as parallel and serial ports, graphic card, sound channel, etc., are built in to a single unit. Most laptops contain batteries to facilitate operations without a readily available electrical outlet. In the interest of saving power, weight and space, they usually share RAM with the video channel, slowing their performance compared to an equivalent desktop machine.

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Netbook PCs are small portable computers in a “clamshell” design, that are designed specifically for wireless communication and access to the Internet. They are generally much lighter and cheaper than subnotebooks, and have a smaller display, between 7" and 9", with a screen resolution between 800x600 and 1024x768. The operating systems and applications on them are usually specially modified so they can be comfortably used with a smaller sized screen, and the OS is often based on Linux, although some netbooks run on Windows XP.

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A PC may be a desktop computer, a laptop computer or a tablet computer.
A PC may be a home computer, or may be found in an office, often connected to a local area network (LAN). This is in contrast to the time-sharing models which allowed large expensive systems to be used by many people, usually at the same time, or large data processing systems which required a full-time staff to operate efficiently.