1.3 Storage Flashcards
What is Primary storage needed for?
Stores data that the CPU can access very quickly.
What is Secondary storage needed for?
Used for long term of data so you can access it again later.
What are the common types of secondary storage?
Optical
Magnetic
Solid state
What are the characteristics for storage?
Capacity Speed Portability Durability Reliability Cost
What are the two tiers of storage?
Primary Storage
Secondary Storage
What are the different types of storage devices?
USB memory sticks Memory/SD cards CD DVD Blu-ray discs
What are the different types of storage media/medium?
Optical storage devices
Flash memory devices
HDD(Hard Disk Drives)
SSD(Solid state drives)
Advantages and disadvantages of USB memory sticks?
Could contain viruses
Can only be used once
No moving parts
Are portable
Advantages and disadvantages of DVDs?
Ideal for storing videos with sounds Fairly portable Less expensive Are fragile Have a smaller Capacity
Advantages and disadvantages of HDDs?
Cheaper Has a higher capacity HDDs have a longer read/write life Slower than SSDs Are louder than SSDs
Advantages and disadvantages of SDDs?
Faster Don't need defragmenting SSDs are silent Expensive Have a short read/write life
What is Data capacity?
Refers to how much data can be saved in a storage device.
What words are used to describe Data capacity requirements(include numbers?)?
Bit Nibble(4 Bits) Byte(8 Bits) Kilobyte(KB(1024 Bytes)) Megabyte(MB(1024 KB)) Gigabyte(GB(1024 MB)) Terabyte(TB(1024 GB))
What does Volatile mean?
Memory where if the power is turned off, then the
data is lost
What does Non-volatile mean?
Memory which can retain its data when the power is turned off.
