1.1.3 Input, Output & Storage
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State three types of storage.
Magnetic Optical Solid State
Give examples of magnetic storage.
Hard disk drive Magnetic tape Floppy disk
Give examples of optical storage.
CD DVD Blu-ray Disc
Give examples of solid state storage.
Flash memory USB stick Solid State Drive
Give examples of input devices.
Keyboard Mouse Microphone Webcam Touchpad Barcode reader
Give an example of a device used for both input and output.
Touchscreen
What are pits in CDs?
Areas on a CDs surface burned into grooves by laser
What does CD stand for?
Compact Disc
Give examples of output devices.
Speaker Monitor Printer Projector
State the order of CD, DVD, Blu-ray from lowest to highest storage capacity.
CD, DVD, Blu-Ray
What is mounted at the end of the actuating arm of a hard disk drive?
Read/write head
Whats the typical capacity of a hard disk drive?
500GB - 5TB
Give two disadvantages of SSDs.
High cost per GB Limited lifespan
What does ROM stand for?
Read Only Memory
Describe the structure in which information is stored in flash memory.
Storage is in blocks, combined to form pages
What is meant by non-volatile?
Storage medium that does not lose its information when power is lost
Which 2 logic gates of used in solid state storage?
NAND & NOR
Give 3 advantages of solid state.
High transfer speeds Lightweight No moving parts
What is ROM?
Non-volatile main memory storage used to store bootstrap instructions & firmware
What is RAM?
Volatile main memory storage used to store data/instructions currently in use
Give 3 disadvantages of optical storage.
Easily damaged Relatively low storage capacity Relatively slow transfer speeds