SLR 3 - Input and Output and Storage Devices Flashcards
What is an input device?
Any device that lets you pass information from the outside world into a computer system.
Give 3 Examples of an input device.
. Microphone
. Keyboard
. Webcam
. Mouse
. Scanners
What is an output device?
Any device that takes data stored in a digital form and convert it into another format that humans can process, for example sound, images or vibration.G
Give 3 examples of an output device
. Speaker
. Headphones
. Monitor/ Screen
. Printer
. Projector
What is a storage device?
Any device used to either temporarily or permanently store data.
Give three examples of storage devices
. SSD
. Flash Drive
. CD
. RAM
. CPU registers
Positives and negatives of Magnetic Storage:
Positives:
. Low cost per GB
. Large Capacity
Negatives
. Slow access times
. Low Portability
. Low reliability
. Low durability
Positives and Negatives of SSD?
Positives:
. Durable
. Fast Access Times
. High Portability
Positives and Negatives of Optical?
Positives:
. Cheap
. Lightweight
. Portable
Negatives:
. Slow access times
. Not Durable
. Low reliability
What is RAM?
RAM is Volatile storage that holds currently in use data or instructions.
What is ROM?
ROM is non volatile storage that holds the BIOS, Bootstrap and Firmware.
What is virtual Storage?
Often referred to as cloud storage
Storing and retrieving data over the internet in the cloud instead of a local storage device.
Benefits and Drawbacks of the Cloud:
Benefits:
. Access to files anywhere on any device
. Easy to collaborate on documents
. Automatic backups provided by host
. Version history and file archiving
Drawbacks
. Exact location of file storage may be unknown - implications in data protection
. Malware such as worms may be spread through files
. Security of file access may be a concern
. Often a fee for larger capacities
