Data Storage Flashcards
Where is data stored for accessibility
The cloud, to help recover it when needed, or downloaded when required
Remote location online
What is a storage device
Any device used to store data
What does internal storage do?
Stores operating systems and software applications
What are the 2 main modern types of internal storage?
HDD (hard disks) and SSD (solid state drive)
What are SSD’s better at than HDD’s
SSD’s are more expensive but are much faster and smaller (better performance)
What is external storage?
Storage outside the the computer
What are some external storage devices?
USB memory sticks,
Memory cards
CD’s
DVD’s
All connected to computer using USB or FireWire connections
What is a byte
A unit of digital info that consists of 8 bits
How can we back up data
Storage device: saves reads data (DVD player)
Storage medium: hardware that stores data ( USB
, hard disk, DVD disks)
What is data storage?
Where we save and read the data again
Arrange units smallest to largest
Bits
Bytes
Kilobytes
Megabytes
Terabytes
1 KB
1000 bytes
1 MB
1000 KB
1 tera byte
1 million MB
What does memory refer to?
A chip that is used to store data for a computer
What are types of main memory
RAM (read only memory)
ROM (random access memory) AKA RWM ( read and write memory)
Features of RAM
Consumes low Power and fast
Expensive
What is cache memory
Supplementary memory that stores frequently accessed data
What is secondary memory
Memory that is not immediately processed by computer, outside it.
Blu-ray Disc, SSD, HDD, tape, USB,
What are PROS of cloud storage
Accessibilty, security, updating
What are CONS of cloud storage
Costs, internet connection, support, privacy
Why do we use cloud storage
If it is corrupted by hackers, edited by viruses, or lost
What is bits
Short for binary digit, stores a value of either 0 (off) or 1 (on)
