What is a light pen?
Correct answer: B. Optical input device
- A. A Mechanical Input device
- B. Optical input device
- C. Electronic input device
- D. Optical output device
Explanation
A light pen detects light from a screen and sends position information to the computer, making it an optical input device. It is not an output device because it does not display or produce information.
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About Hardware and Software
Hardware includes the physical components of a computer, such as the CPU, motherboard, registers, memory, storage devices and peripheral equipment. Software covers system software, application software, utilities, drivers and firmware, with attention to how the operating system manages hardware and how software differs from the physical equipment it controls.
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