# computer key

> physical button on a computer keyboard

**Wikidata**: [Q27884930](https://www.wikidata.org/wiki/Q27884930)  
**Source**: https://4ort.xyz/entity/computer-key

## Summary
A computer key is a physical button located on a computer keyboard. It functions as a push-button mechanism, allowing users to input text, commands, and control various functions within a computer system.

## Key Facts
- A computer key is a physical button on a computer keyboard.
- It is classified as a subclass of a push-button.
- It is a fundamental part of a computer keyboard.
- Common aliases include "keyboard key" and simply "key".
- A computer key often comprises a keycap and an electrical switch.
- For mechanical keyboards, a specific component is the keyboard key switch.
- The multimedia key, a type of computer key, had its inception in 1999.
- It is partially coincident with a typewriter key.

## FAQs
### Q: What is a computer key?
A: A computer key is a physical button on a computer keyboard. It acts as a push-button mechanism to control a device, primarily for inputting text and commands into computers.

### Q: What are the main components of a computer key?
A: A computer key typically includes a keycap and an electrical switch. In the case of mechanical keyboards, a specific component known as a keyboard key switch is used.

### Q: What are some different types of computer keys?
A: There are many types of computer keys, including character keys for typing letters, modifier keys that change the function of other keys, function keys, arrow keys for navigation, and multimedia keys for controlling media playback.

## Why It Matters
The computer key is a foundational element of human-computer interaction, serving as the primary physical interface for users to communicate with and control computing devices. Its existence enables the input of text, execution of commands, and navigation through digital environments, making complex software and operating systems accessible. The specialization of keys into various types—such as character keys for data entry, modifier keys for advanced functions, and navigation keys for movement—highlights its critical role in facilitating efficient and diverse user input. Without the computer key, the computer keyboard, a device central to modern computing, would not function as it does, profoundly impacting productivity, accessibility, and the overall user experience.

## Notable For
- Being the primary physical interface for text and command input on computer keyboards.
- Its diverse specialization into numerous types, including character, modifier, function, and navigation keys, each serving distinct input purposes.
- Its fundamental role as a component of the computer keyboard, a device with a high sitelink count (129), indicating its widespread importance.
- Its partial coincidence with the traditional typewriter key, reflecting its historical lineage in input technology.

## Body

### Definition and Classification
A computer key is defined as a physical button located on a computer keyboard. It is classified as a subclass of a push-button, which is a simple mechanism designed to be temporarily pushed down to control a device. The computer key is an integral part of a computer keyboard, a device comprising an arrangement of buttons or keys used to input text into computers.

### Components
A computer key typically consists of several parts:
-   **Keycap**: The visible part of the key that is pressed by the user. It is often present.
-   **Electrical switch**: A mechanism that registers the key press as an electrical signal.
-   **Keyboard key switch**: A specific type of switch used in mechanical keyboards.

### Types of Computer Keys
Computer keys are categorized into various types based on their function:

#### General Categories
-   **Slow keys**: A computer accessibility feature.
-   **Lock key**: A computer key that toggles application state.
-   **Any key**: Used in prompts like "Press any key to continue" to indicate user input is needed.
-   **Character key**: Used to type letters and other characters.
-   **Scrolling key**: Used for navigation (e.g., page up/down, home, end).
-   **Modifier key**: Changes the semantics of other keys (e.g., Shift, Ctrl, Alt).
    -   **Super key**: A type of modifier computer key.
    -   **Front key**: A modifier key found on the space-cadet keyboard.
    -   **Hyper key**: Another modifier key on the space-cadet keyboard.
    -   **Top key**: Also a modifier key on the space-cadet keyboard.
-   **Language input key**: Typically found on Japanese and Korean keyboards.
-   **Arrow key**: Designed to move the cursor in a specified direction.
-   **Page Up and Page Down keys**: Keys used for navigation.
-   **Power management key**: A group of computer keys.
-   **Function key**: A key on a computer or terminal keyboard.
-   **Menu key**: Used to activate a context menu.
-   **Multimedia key**: An additional key designed to control media player software functions (or other software, system, volume control). Its inception was in 1999.
-   **Macro key**: A computer key.
-   **Copilot key**: A computer keyboard key used to start Microsoft Copilot.
-   **Display key**: An electronic push-button that incorporates a graphical display.

#### Related Specific Keys (Things)
-   Esc key
-   Print screen
-   Space bar (a key on a typewriter or alphanumeric keyboard in the form of a horizontal bar)
-   Delete key (used to delete the character succeeding the cursor)
-   System request
-   Option key (a modifier key present on Apple keyboards)
-   Shift lock
-   Page Up
-   Page Down
-   Power key

### Aliases and Categories
-   **Aliases**: computer keyboard key, keyboard key, key, tecla de ordenador, клавиша компьютера, مفتاح الحاسوب.
-   **Commons Category**: Computer keyboard keys.
-   **Topic's Main Category**: Category:Computer keys.

### Image
An example image is available at `https://commons.wikimedia.org/wiki/Special:FilePath/Eñe_on_keyboard_-_grey.jpg`.

### Relationship with Typewriter Keys
A computer key is partially coincident with a typewriter key, indicating a shared functional heritage in text input devices.

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  "@type": "Thing",
  "name": "computer key",
  "description": "physical button on a computer keyboard",
  "image": "https://commons.wikimedia.org/wiki/Special:FilePath/Eñe_on_keyboard_-_grey.jpg",
  "additionalType": [
    "https://schema.org/Button",
    "https://schema.org/ComputerKeyboard"
  ]
}