Which of the following devices is used for secondary storage in a computer system?
Correct answer: B. Hard Disk Drive (HDD):
- A. RAM (Random Access Memory):
- B. Hard Disk Drive (HDD):
- C. CPU (Central Processing Unit):
- D. ALU (Arithmetic Logic Unit):
Explanation
A hard disk drive is a secondary storage device that uses magnetic platters to store data persistently. HDDs are used to store data that is not needed in main memory (RAM) but needs to be retained even when the computer is turned off. HDDs provide large storage capacities at a relatively low cost but have slower data access times compared to RAM.
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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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