Why are keyboards, mouse, and disk not directly connected to the system bus
Correct answer: D. All of these
- A. Different organization structured
- B. Different data rate
- C. Different data format
- D. All of these
Explanation
Using an interface like a USB controller or a disk controller helps to standardize the communication between these devices and the system bus. This allows for:Flexibility: Different devices can be connected and disconnected without modifying the system bus.Efficiency: The interface can handle data rate and format conversions for smooth communication.Modular design: The system becomes more modular and easier to maintain.While all these reasons (a), (b), and (c) contribute to why keyboards, mice, and disks are not directly connected to the system bus, (d) "All of these" is the most comprehensive answer.
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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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