Keyboard | Types of Keyboard - Computer Work 22 

Keyboard

A keyboard is one of every of the first input devices used with a computer. The same as an electrical serial printer, a keyboard consists of buttons accustomed to producing letters, numbers, and symbols, and performing further functions. 

the subsequent sections offer a lot of in-depth data and answers to a number of commonly asked questions about the keyboard.

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Keyboard overview

The following image shows a 104-key Saitek keyboard with arrows inform to every section, together with the management keys, operating keys, light-emitting diode indicators, wrist pad, arrow keys, and keypad.

What are the keyboard rows?

The horizontal rows of character keys within the typewriting space have specific names. for instance, once inserting your hands on the keyboard, they must be positioned over the house row keys. The keys below the house row are known as rock bottom row keys, and higher than the house row keys are the highest row keys.

Keyboard ports and interfaces

Today, most desktop computer keyboards connect to the computer using either USB or Bluetooth for wireless communication. Before USB, a computer used PS/2, serial port, or AT (Din5) as a keyboard interface.

Keyboard ports and interfaces 

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Types of keyboards

Today, most keyboards are almost like one another, however are also missing one or additional of the sections mentioned earlier (e.g., the keypad). wherever keyboards begin to take issue the foremost is in their construction and style. Some keyboards are mechanical, whereas others use membrane keys. Some keyboards are decreased to the center, et al folds in 0.5 or roll-up. whereas most keyboards use the QWERTY layout, there are still styles that utilize the Dvorak layout.

What else can a keyboard do?

A keyboard has more functions than writing. Below may be a list of further tasks you'll be able to perform employing a keyboard.

• Enter commands in a very instruction or another user interface (command-line interface).
• Use keyboard shortcuts to perform tasks a lot quicker. as an example, victimization Ctrl+C to repeat text and Ctrl+V to stick it elsewhere.
• Use the operate keys to perform tasks. as an example, pressing F5 in a very browser to refresh an online page.
• Control constituent. as an example, several keyboards will amendment your speakers' volume.
• Use the arrow keys to maneuver the text pointer on the screen.
• Use the WASD keys or arrow keys to maneuver a personality in a very game.
• Use the numeric data input device to create calculations in a very calculator.

Apple keyboards

The following section contains data on Apple keyboards and the way they dissent from their laptop equivalents.

What does an Apple keyboard look like?

The following image shows the quality layout for an associate degree Apple keyboard with a numeric input device.

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Laptop keyboards

A portable computer keyboard is organized otherwise than a desktop keyboard to accommodate the laptop's narrower footprint. Most portable computer keyboards are created smaller by inserting the keys nearer Associate in Nursingd by as well as an Fn key. The Fn key's accustomed offer different keys over once perform. as an example, pressing the Fn key and also the up or down arrow on the keyboard could increase or decrease screen brightness (shown below). Also, several portable computer keyboards typically omit the numeric input device to save lots of areas.

Smartphone and tablet keyboards

Today's smartphones and tablets don't go together with a physical keyboard, though one is also purchased as an Associate in Nursing elective peripheral add-on. These devices utilize a thumb keyboard or on-screen keyboard to kind messages and enter text into numerous fields. The image is an Associate in Nursing example of the Apple iPhone on-screen keyboard, used on all Apple touch-based devices.

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Why is the keyboard an input device?

A data {input device | input device} is taken into account Associate in Nursing input device as a result of it solely sending information to a pc and doesn't receive any data from it. As you sort on the keyboard, you are inputting data into the pc.

Does a computer need a keyboard?

Many users area unit shocked to find out that a keyboard is taken into account a peripheral which a pc will perform while not one. In fact, if you've got a USB keyboard, you'll disconnect it currently, and you see that the pc continues to figure while not it. several servers, just like the pc Hope net server, run virtually their entire life while not a keyboard and area unit administered by a remotely connected user.

What are multimedia keys?

Multimedia keys square measure those keys that enable the user to regulate music on their data input device. These keys add practicality, like play, pause, stop, rewind, quick forward, skip track, eject, shuffle, and repeat for music.

What keys appear twice on a keyboard?

On a typical U.S. computer keyboard, 3 keys seem double. they're the altitude keys, Ctrl keys, and Shift keys. the majority of the keys on the numeric input device are duplicated. These keys embrace the divide (/), times (*), cipher (-), plus (+), period (.), numbers zero through nine, and therefore the Enter key. the sole key on the numeric input device that doesn't seem doubly is the Num lock key.

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