Flashcards
1.3 Input,Output and storage
Cards in this deck (11)
- 1What is an input deviceAny device that allows the user to pass information from the outside world into a computer system
Examples: Keyboard,Webcam,Barcode scanner,Microphone - 2What is an output deviceAny device that can take data stored in digital form and convert it into another format
Examples: Speaker,Headphones,Printer,Projector - 3What is a storage deviceAny device used for either temporary or permanent storage of data
- 4What is a driveThe device that reads and writes data from seconadry storage
- 5What is a mediaWhat the data is actually stored on
- 6Hard Disk DriveRelises on the polirisation of magnetic particles to store bits on a magnetic material which is typically moved mechanically.
Pros:
Very high storage capacity
Cheapest option per GB
Cons:
Relatively slow transfer speeds
Contain moving parts-tendency to break
Large power consumption
Noisy - 7Solid State DriveStores data on a collection of memory chips. No moving parts as data is accessed by software.
Pros:
Quick access speeds
No moving parts-durable
Portable due to light and small nature
Cons:
Most expensive per GB
Somewhat low capacity
Limited lifespan - 8Optical DrivesData is stored in the reflectivity (pits and lands) of a surface, and is read and written by a laser.
Pros:
Small,thin very portable
Cheap
Lightweight
Cons:
Slow transfer speeds
Small capacity
Can be damaged easily by scratches - 9RAM- Random Access MemoryTemporary storage of data and instruction, it holds currently executed processes.
Volatile-loses contents when power is lost
Read and write
Higher access speeds than even flash memory
○ More expensive per gigabyte than secondary storage devices - 10ROM- Read Only MemoryNon-volatile
○ Cannot be modified
○ Once programmed, the state of the memory cells inside does not changed
○ Useful for storing fixed sequences of instructions like a computer’s startup
(bootstrap) routine - 11Virtual StorageOften referred to as cloud storage, virtual storage is “the concept of storing and retrieving data over the internet in the cloud instead of a local storage device”.
Pros:
Data can be access at anytime/anywhere as long as there is an internet connection
Data can be shared easily
Easy to calibrate
Storage considered to be limitless
Cons:
It can become quite expensive
If connection is poor,access times are slow
No internet connection means no access to the files
Information
- Description
- Cambridge Computing SLR 1 Flashcards on 1.3 Input,Output and storage, created by Alan Szelast on 29/11/2021.
- Created by
- Alan Szelast
- Views
- 2
- Rating