1. Input Unit vs Output Unit: The input unit is the part of the computer that receives data and instructions to be processed. Examples include a keyboard or a mouse. The output unit, on the other hand, is the part of the computer that presents the results of processing. Examples include a monitor or a printer.

2. Physical Mouse vs Optical Mouse: A physical mouse uses a ball and rollers to detect movement, while an optical mouse uses a light-emitting diode (LED) and photodiodes to detect movement.

3. Pointing Devices vs Pick Devices: Pointing devices are used to control the position of the cursor on the screen, examples include a mouse or a touchpad. Pick devices, on the other hand, are a type of pointing device that are used to select or "pick" objects on the screen, examples include a stylus or a light pen.

4. Hand-held Scanners vs Flat-bed Scanners: Hand-held scanners are small, portable devices that are moved over the document to be scanned. Flat-bed scanners, on the other hand, have a flat, glass surface onto which a document is placed to be scanned.

5. Impact Printers vs Non-Impact Printers: Impact printers work by striking an inked ribbon against the paper, much like a typewriter. Examples include dot matrix printers. Non-impact printers, on the other hand, do not strike the paper. Examples include laser printers and inkjet printers.

6. Dot Matrix Printers vs Daisy Wheel Printers: Dot matrix printers create characters by striking pins against an ink ribbon to form a pattern of dots. Daisy wheel printers, on the other hand, have a wheel with characters on it that strike an ink ribbon to create characters.

7. Ink-jet Printers vs Laser Printers: Ink-jet printers work by spraying tiny droplets of ink onto the paper. Laser printers, on the other hand, use a laser beam to produce an image on a drum, which is then rolled through toner and transferred onto the paper.

Question

1. Input Unit vs Output Unit: The input unit is the part of the computer that receives data and instructions to be processed. Examples include a keyboard or a mouse. The output unit, on the other hand, is the part of the computer that presents the results of processing. Examples include a monitor or a printer.

2. Physical Mouse vs Optical Mouse: A physical mouse uses a ball and rollers to detect movement, while an optical mouse uses a light-emitting diode (LED) and photodiodes to detect movement.

3. Pointing Devices vs Pick Devices: Pointing devices are used to control the position of the cursor on the screen, examples include a mouse or a touchpad. Pick devices, on the other hand, are a type of pointing device that are used to select or "pick" objects on the screen, examples include a stylus or a light pen.

4. Hand-held Scanners vs Flat-bed Scanners: Hand-held scanners are small, portable devices that are moved over the document to be scanned. Flat-bed scanners, on the other hand, have a flat, glass surface onto which a document is placed to be scanned.

5. Impact Printers vs Non-Impact Printers: Impact printers work by striking an inked ribbon against the paper, much like a typewriter. Examples include dot matrix printers. Non-impact printers, on the other hand, do not strike the paper. Examples include laser printers and inkjet printers.

6. Dot Matrix Printers vs Daisy Wheel Printers: Dot matrix printers create characters by striking pins against an ink ribbon to form a pattern of dots. Daisy wheel printers, on the other hand, have a wheel with characters on it that strike an ink ribbon to create characters.

7. Ink-jet Printers vs Laser Printers: Ink-jet printers work by spraying tiny droplets of ink onto the paper. Laser printers, on the other hand, use a laser beam to produce an image on a drum, which is then rolled through toner and transferred onto the paper.

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1. Input Unit vs Output Unit: The input unit is the part of the computer that receives data and instructions to be processed. Examples include a keyboard or a mouse. The output unit, on the other hand, is the part of the computer that presents the results of processing. Examples include a monitor or a printer.

2. Physical Mouse vs Optical Mouse: A physical mouse uses a ball and rollers to detect movement, while an optical mouse uses a light-emitting diode (LED) and photodiodes to detect movement.

3. Pointing Devices vs Pick Devices: Pointing devices are used to control the position of the cursor on the screen, examples include a mouse or a touchpad. Pick devices, on the other hand, are a type of pointing device that are used to select or "pick" objects on the screen, examples include a stylus or a light pen.

4. Hand-held Scanners vs Flat-bed Scanners: Hand-held scanners are small, portable devices that are moved over the document to be scanned. Flat-bed scanners, on the other hand, have a flat, glass surface onto which a document is placed to be scanned.

5. Impact Printers vs Non-Impact Printers: Impact printers work by striking an inked ribbon against the paper, much like a typewriter. Examples include dot matrix printers. Non-impact printers, on the other hand, do not strike the paper. Examples include laser printers and inkjet printers.

6. Dot Matrix Printers vs Daisy Wheel Printers: Dot matrix printers create characters by striking pins against an ink ribbon to form a pattern of dots. Daisy wheel printers, on the other hand, have a wheel with characters on it that strike an ink ribbon to create characters.

7. Ink-jet Printers vs Laser Printers: Ink-jet printers work by spraying tiny droplets of ink onto the paper. Laser printers, on the other hand, use a laser beam to produce an image on a drum, which is then rolled through toner and transferred onto the paper.

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