Input Devices Flashcards
What are input devices?
Hardware that allows you to input instructions to be processed
What are keyboards?
Their use, advantages and limitations?
Allow you to input instructions by pressing keys
Advantages: They are quick and intuitive
Limitations: They need keyboard skills and take up lots of space
What is a mouse?
Its use, advantages and limitations?
A pointer device to input commands and use GUI
Advantages: easy and effective
Limitations: need fixed workspace and sometimes inaccurate
What is a touch screen?
Its use, advantages and limitations?
A touch sensitive screen to input commands snd interact with the operating system. A keyboard is on the screen and your finger is the pointer.
Advantages: Natural and intuitive
Limitations: can get dirty and harder to type
What is a touchpad?
Its use, advantages and limitations?
A pointer.
Advantages: portable
Limitations: difficult and uncomfortable
What is a scanner?
Its use, advantages and limitations?
It captures images of real documents.
Advantages: stores lots of images, easy to edit and preserve documents
Limitations: quality of scanned document depends on the scanner, takes time to scan
What is a digital camera?
Its use, advantages and limitations?
Replaces a Digital Single Lens Reflex Camera. Captures image and video.
Advantages: Data stored digitally, store lots of data and easily share them
Limitations: Loss of computer means loss of files. Quality varies
What is a webcam?
Its use, advantages and limitations?
A camera that shares your live feed in real time.
Advantages: cheap, small and often built in
Limitations: low resolution and needs connection to ict
What is a microphone?
Its use, advantages and limitations?
Allows audio to be transferred and stored.
Advabtages: communication and commands
Limitations: quality varies and can pick up futile sounds
Determine the different image qualities.
Resolution: dpi for cameras and scanners
Image quality: color depth in bits
Sensor size
ISO rating: sensitivity to light
Determine the different image qualities.
Resolution: dpi for cameras and scanners
Image quality: color depth in bits
Sensor size
ISO rating: sensitivity to light
