2) Memory and Storage (RAM, ROM, Virtual Memory)
📖 Theory – 2) Memory and Storage (RAM, ROM, Virtual Memory)
I. RAM and ROM
• RAM: volatile, temporary, fast.
• ROM: non‑volatile, permanent, contains boot instructions.
• Difference: RAM can be written to, ROM cannot.
II. Virtual Memory
• Using part of the hard drive as RAM.
• Slower than RAM, but increases available memory.
III. Types of Secondary Storage
• Magnetic (hard disk), Solid State (SSD), Optical (CD/DVD).
• Advantages/disadvantages of each.
IV. Storage Capacity and Units
• Bit, Byte, Kilobyte, Megabyte, Gigabyte, Terabyte.
• Converting between units.
V. Cloud Storage
• Data stored on remote servers accessed via internet.
🏆 Level 1
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📝 Practice Questions (20)
Select the correct answer, then click "Submit" to see the result. If you get it wrong, an AI hint will be generated.
Question 1: How does Gigabyte work?
Question 2: Give an example of Byte.
Question 3: Why is Bit important in computer science?
Question 4: How does ROM work?
Question 5: Give an example of Virtual memory.
Question 6: Why is Solid state drive important in computer science?
Question 7: Why is Hard disk drive important in computer science?
Question 8: What is Non-volatile memory?
Question 9: Why is Gigabyte important in computer science?
Question 10: Define RAM.
Question 11: Explain Storage capacity.
Question 12: What is Secondary storage?
Question 13: Define Optical storage.
Question 14: Define Hard disk drive.
Question 15: What is Data transfer speed?
Question 16: Give an example of Kilobyte.
Question 17: Give an example of Cloud storage.
Question 18: Give an example of Memory hierarchy.
Question 19: How does Data transfer speed work?
Question 20: Define Cache memory.
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