Keyboard

Keyboard

A keyboard is a input device primarily used for typing in computers and other digital devices. It is one of the most essential peripherals for computers, and its design and functionality have evolved significantly since its inception.

History

The keyboard has its roots in mechanical typewriters, which were invented in the 19th century. The first computer keyboards were adapted from the typewriter, and they have since evolved to include a variety of types, including mechanical, membrane, and virtual keyboards.

Design and Functionality

A standard keyboard typically has between 80 and 110 keys, including alphanumeric keys, function keys, and special purpose keys. The layout of these keys is often based on the QWERTY design, which was originally created for typewriters. Other common layouts include AZERTY and DVORAK.

Keyboards are used for a variety of tasks, including typing, gaming, and programming. Some keyboards are designed specifically for these tasks, with additional keys or features to enhance functionality.

Types of Keyboards

There are several types of keyboards, each with its own advantages and disadvantages.

Mechanical Keyboards

Mechanical keyboards use individual mechanical switches for each key. They are known for their durability, tactile feedback, and audible click sound.

Membrane Keyboards

Membrane keyboards use a pressure pad that has outlines and symbols printed on a flat, flexible surface. They are quieter and cheaper than mechanical keyboards, but they lack the tactile feedback.

Virtual Keyboards

Virtual keyboards are software-based keyboards that display a keyboard layout on a touchscreen device. They are commonly used on smartphones and tablets.

See Also

• Computer mouse
• Touchscreen
• Computer hardware