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Storage devices - Coggle Diagram
Storage devices
Read only memory
Has no moving parts
Holds data that does not need to be changed
It is non volatile(doesn't lose it's memory)
Used in program cycles in washing machines
Used to store BIOS instructions
Used for programs instruction in game consoles
Read only memory known as ROM
Holds a small amount of bytes
Random Access memory
Stores programs in current use
HAs no moving parts
It is volatile(it loses it's memory when PC switched off)
Holds a small amount of bytes
Used to store BIOS instructions
Can store 4gn of data in 1 module
Random Access memory is also known as RAM
Memory Stick VS CD's
Speed of access is quicker
Speed of data transfer is quicker
Easier to carry/more portable
Pen drives are more robust/less prone to damage
Can store more data
Majority of computers have USB ports/many school computers don't have CD drives.
Pen Drive
Used for
Transferring files from one PC to another
Adv of
Holds more data than DVD
Have a durable solid(robust) state design
Small and portable storage media
Pen drives have no moving parts
Information
Does not require a card reader, uses USB port
Type of access= Direct/Random
Solid State medium
Disadv of
Easy to steal and lose
More expensive than other types of storage (£ per Mb)
Most USB pen drives do not include a write-protect mechanism
Memory stick
Used in
Palm Tops
Mobile Phones
Digital cameras
Gaming consoles
Adv of
Holds more data than CD and Floppy
Small & portable storage media
Information
Uses a card reader to read data on it
Type of access= Direct/Random
Solid state medium
Disadv of
More expensive than other types of storage(£ per mb)
Easy to steal and lose
Flash memory
Used in
Palm Tops
Mobile Phones
Digital cameras
Adv of
Holds more data than CD and Floppy
Small & portable storage media
Information
Uses a card reader to read data on it
Type of access= Direct/Random
Solid state medium
Disadv of
More expensive than other types of storage(£ per mb)
Easy to steal and lose