Input devices and their uses

Enter text, numbers, and commands into a computer.

Used in word processing, programming, and data entry applications.

Fast for typing large amounts of text.

Widely available and easy to use.

Can cause Repetitive Strain Injury (RSI) due to prolonged typing.

Requires desk space and proper positioning to avoid discomfort.

Used for entering numerical data quickly, often found in ATMs, calculators, and point-of-sale systems.

Compact and efficient for numeric input.

Reduces input time for calculations.

Limited to numeric input and specific functions.

Can cause RSI with excessive use.

Controls the pointer on a computer screen.

Used for selecting, dragging, and interacting with applications.

Easy to use and provides precise control.

Allows quick navigation of graphical user interfaces (GUI).

Requires a flat surface for effective use.

Prolonged use can lead to RSI, particularly in the wrist.

Used as a pointing device in laptops to replace a mouse.

No external hardware required.

More portable and space-saving than a mouse.

Less precise than a mouse for detailed work.

Can cause RSI if used frequently with poor ergonomics.