Flashcards
AQA Computer Science Terms Revision
Cards in this deck (12)
- 1Input DevicesDevices that the consumer uses to input information into the computer.
e.g
Keyboards, Mice, Microphones, Scanners. - 2Output DevicesDevices that output information to the consumer.
e.g
Monitors, Speakers, Printers. - 3Non-Volatile MemoryTypes of memory storage that holds data and information after power is turned off.
e.g
Solid State Drives, Magnetic Disks, ROM, CD-ROM. - 4Volatile MemoryType of memory storage that loses all data it is holding after the power is turned off.
e.g
RAM, Cache. - 5Secondary StorageSecondary Storage is anything that stores data permanently. It can also be external.
e.g
Magnetic Storage, Optical Storage. - 6Magnetic StorageIt's a magnetic disk that uses moving read and write heads that contain electromagnets. These create a magnetic charge for 0 (off) or 1 (on).
- 7Advantages of Magnetic Storage> Very large data capacity
> Stores and retrieves data faster than optical drives
> Non-Volatile
> Cheaper than other methods
> Can be easily replaced or upgraded - 8Disadvantages of Magnetic Storage> Hard drives use moving parts and will fail
> Crashes can damage surface of the disk, leads to loss of data
> Use a large amount of power compared to other storages types.
> Can be noisy - 9RAM(Random Access Memory) is an example of Volatile memory. It works as a bridge between the hard drive and the processor to speed up the processing process. Using RAM is faster
- 10CPU(Central Processing Unit) Often referred to as the computer's brain, this processes all information and performs functions in the computer.
- 11Order the way the memory flows from the disk storage to the CPUStorage > Virtual Memory > RAM > Cache > CPU
- 12—
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- GCSE Computing Flashcards on AQA Computer Science Terms Revision, created by Oliver Parker on 05/05/2017.
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- Oliver Parker
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