Questions and Answers
Which type of memory is called volatile memory?
Static RAM (SRAM)
What type of memory employs capacitors to store a minute amount of electric charge?
Dynamic RAM (DRAM)
Which type of memory must be refreshed frequently due to the dissipation of charges on the capacitors?
Dynamic RAM (DRAM)
Which type of memory is permanently programmed and non-volatile?
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Which type of memory can hold much more information in the same area than Static RAM (SRAM)?
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Which term describes the feature of Random Access Memory (RAM) where any memory location can be accessed in the same amount of time, regardless of its position in the memory?
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What is the main feature of EPROM (Erasable Programmable Read-Only Memory)?
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What is the main difference between EPROM and PROM?
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Which term best describes secondary storage devices?
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What is the main difference between magnetic and optical storage devices?
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What is the purpose of formatting disks before use?
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What does RPM stand for in the context of disk drives?
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Which component of a disk drive is responsible for seeking across various tracks to find data?
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What is the main effect of well-arranged sectors on a disk?
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In terms of disk storage, what does FAT stand for?
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If a disk spins at 10000 RPM, what is the rotational delay?
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Study Notes
Memory Types
- RAM (Random Access Memory) is a type of volatile memory that loses its contents when power is turned off.
- DRAM (Dynamic Random Access Memory) employs capacitors to store a minute amount of electric charge.
- DRAM memory must be refreshed frequently due to the dissipation of charges on the capacitors.
- ROM (Read-Only Memory) is a type of non-volatile memory that is permanently programmed.
- DRAM can hold much more information in the same area than SRAM (Static Random Access Memory).
RAM Features
- Random Access Memory (RAM) has the feature of random access, where any memory location can be accessed in the same amount of time, regardless of its position in the memory.
EPROM Features
- EPROM (Erasable Programmable Read-Only Memory) has the main feature of being erasable under ultraviolet light.
- The main difference between EPROM and PROM (Programmable Read-Only Memory) is that EPROM is erasable, while PROM is not.
Storage Devices
- Secondary storage devices, such as hard drives and optical drives, hold data even when power is turned off.
- The main difference between magnetic and optical storage devices is the method of storing data: magnetic devices use magnetic fields, while optical devices use light.
- Formatting disks before use prepares them for storing data by creating a file system and directories.
- RPM (Revolutions Per Minute) measures the speed of disk rotation in disk drives.
- The actuator arm is responsible for seeking across various tracks to find data on a disk drive.
- Well-arranged sectors on a disk reduce the time it takes to access data.
- FAT (File Allocation Table) is a file system used to organize data on a disk.
- If a disk spins at 10000 RPM, the rotational delay is 6 milliseconds.
