CS | Input/Output Devices and CPU Quiz

What is the primary purpose of the Program Counter (PC) in a CPU?

• To execute arithmetic operations

• To store the result of the last operation

• To hold the address of the next instruction

• To fetch data from the cache

Which of the following buses is responsible for carrying memory addresses?

• Data Bus

• Address Bus

• Control Bus

• Interrupt Bus

What is the role of a QR code scanner?

• Converts sound waves into digital data

• Measures light intensity to create images

• Reads QR codes and processes them into data

• Captures geometry to create 3D models

State two benefits of using an optical mouse compared to a mechanical mouse.

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Describe the function of the Arithmetic Logic Unit (ALU).

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Discuss the advantages and disadvantages of using cache memory compared to main memory (RAM).

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Explain why a microphone is an important input device in modern applications. Include at least two examples in your explanation.

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Which component in the CPU coordinates all its activities?

• ALU

• Cache

• Control Unit

• Memory Data Register

Which type of scanner creates a digital model by capturing the geometry of an object?

• Barcode Scanner

• 2D Scanner

• 3D Scanner

• QR Code Scanner

Which of the following is a characteristic of resistive touchscreens?

• Multi-touch capability

• Activated by any object

• Sensitive to water interference

• Excellent image clarity