Computer Input Devices

Keyboard Sections: Alphanumeric Keys (Alphabet and Numbers): Comprising letters (a-z) and numbers (0-9). Function Keys F1-F12: Twelve keys, F1-F12, situated horizontally on the first row of enhanced keyboards, or labeled F1-F10 on standard keyboards. III. Control Keys – Del, Ctrl, Esc, and Alt: Used in conjunction with other keys to execute specific tasks. Cursor-Control and […]

Keyboard Sections:

  1. Alphanumeric Keys (Alphabet and Numbers): Comprising letters (a-z) and numbers (0-9).
  2. Function Keys F1-F12: Twelve keys, F1-F12, situated horizontally on the first row of enhanced keyboards, or labeled F1-F10 on standard keyboards.

III. Control Keys – Del, Ctrl, Esc, and Alt: Used in conjunction with other keys to execute specific tasks.

  1. Cursor-Control and Screen Movement Keys – Arrow, Home, End, Page Up, etc.: Allow users to move the cursor left, right, up, and down one line.
  2. Numeric Keypad: Usually located at the extreme right-hand corner, exclusively featuring numeric keys.

 

Keyboard Features:

  1. Rollover Capability: Allows simultaneous pressing of several keys without jamming, enhancing operator input speed.
  2. Auto-Repeat Capability: Many keys can automatically repeat operations when held down until released.

 

Keyboard Uses:

  1. Enter text, numbers, and punctuation.
  2. Shutdown the computer system in the absence of a mouse.
  3. Use Ctrl + Alt + Del to restart the computer during warm booting.

 

Mouse:

A mouse, like a keyboard, serves as an interface for interacting with a computer screen and is used for drawing and plotting images.

 

Mouse Categories:

  1. Optical Mouse
  2. Ball Track Mouse

 

Basic Mouse Functions:

– Clicking: Quickly pressing and releasing a mouse button once.

– Double Clicking: Rapidly pressing and releasing a mouse button twice.

– Dragging: Holding down a mouse button while moving an object.

– Point: Moving the mouse pointer to touch an item.

 

Mouse Functions:

  1. Drawing various objects.
  2. Selecting items, menus, etc.
  3. Moving, cutting, and pasting objects.

 

Mouse Features:

  1. Right and left buttons.
  2. Scroll button.
  3. Ball/laser underneath.

 

Mouse Operation:

Use your right thumb and the third finger, placing the first finger on the left button and the third finger on the right. Operations may vary between laptops.

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