Computer Fundamentals – Input Devices
Input devices are peripherals that allow users to enter data and commands into a computer. A personal computer can be operated using the mouse, keyboard or a laptop mouse pad.
Keyboard
A keyboard is an input device that allows users to enter text, numbers, and commands into a computer
Important Keyboard Keys
Following Keys are most important for day to day operation of a computer. If you are new try these keys:
| Keys | Function |
| Esc | Interrupts or cancels the current process, closes pop-up windows. Also called the Escape key. |
| Caps Lock | Enables continuous typing in uppercase letters. |
| Shift | Makes a letter uppercase when pressed. |
| Tab | Provides a tab space in the text. |
| Ctrl | Modifier key used in conjunction with other keys for special operations (e.g., Ctrl + C for copy). |
| Alt | Modifier key usually pressed with another key for special operations (e.g., Alt + Tab to switch apps). |
| Num Lock | Activates the numeric keypad for number input. Newer keyboards may not have a separate Num Lock section. |
| Spacebar | Adds space between numbers or text. |
| Enter | Executes a carriage return, creates a new line in documents, and serves as the OK key to complete actions. |
| Function Keys | Labeled F1 through F12, these keys have special functions defined by the operating system or programs and may be combined with Alt or Ctrl. |
Mouse
A computer mouse is an input device. Moving a mouse along a flat surface can move the on-screen cursor to different items on the screen. Items can be moved or selected by pressing the mouse buttons (called clicking).
Functionality
- Two button allow you to input different messages to your computer depending on Whether you click right button or the left button.
- The left button if double click usually used for opening files, where a single click is used
For navigating webpages. The right mouse button is often used to open contextual menus, which are pop-up menus that change depending where you click.