Module 1.2 Flashcards

1
Q

Input

A
  • Provides inctructions to software
  • Data that needs processing
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Types of image capture input

A
  • Digital Camera
  • Smartphone camera
  • Top-end DSLR camera
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Digital Cameras

A
  • DLSR: Cameras that have settings changeable lenses (Professional Camera)
  • Point-and-shoot: Cameras that are designed fro quick use and do not have lenses or professional settings(Smartphone Camera)
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Advantages of Digital Cameras

A
  • Can take multiple photos(limited to yor memory cards capacity)
  • Photos can be viewed and deleted immediately
  • Photo can be tranferred to another editing program easily because its already in digital format
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Disadvantages of digital cameras

A

There are no disadvantages, but they used to be:
* Low light
* Cost
* Quality

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Specifications that determine quality of digital cameras

A
  • Resolution [dpi: dots per inch]: How many pixels make up the image (avg 10-30)
  • Lense: The larger the lense, the better the quality
  • Sensor: Larger sensors capture more light, even if a smaller one has the same amount of megapixels
  • ISO: The sensitivity to light of the camera sensor. This is what determines the quality of low light photos
  • Optical zoom: The closer you move towards the object, the clearer it gets (uses the cameras lense)
  • Digital zoom: The closer you get, the blurrier and more pixelated it gets (the magnifying tool in editing software)
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Scanners

A
  • An input device used to scan images to a computer
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

Specifications that determine quality for scanners

A
  • Resolution: The higher the dpi, the better the quality, but the image will aslo take up more space
  • Colour depth: The amount of colours that can be represented by a pixel. Usually has 24bit colour. The higher the colour depth, the more space the image will take up.
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Advantages of scanners

A
  • Many/large documents can be scanned and saved into one file
  • Due to things being digital, they take up less office space
  • No need for fax anymore
  • Old documents can be shared with others ans stored for future generations
  • Scanners like barcode and POS speed up work
  • QR codes can direct people directly to websites instead of using an URL
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Disadvantages of Scanners

A
  • Quality of scan is dependant on the original copy
  • The scan can take long depending on what type it is
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Examples of data collection devices

A
  • In hospitals to record heart rate, pressure, etc
  • Used to record weather conditions
  • Used by meters to record household water consumption
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Advantages of data collection devices

A
  • Uses less man power
  • Faster than human input
  • Has less errors than human labour
  • More accurate
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Disadvantages of data collection devices

A
  • Could be an unnoticable error that will lead to incorrect infomation
  • Could be expensive to install/upgrade/repair
  • Not everything can be collected by sensors, so may need human intervention
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

Output

A
  • Provied user with feedback on what they were doing
  • Give user with a more permanent copy of what was being processed
  • Allow the transmission of data between computers/devices
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

Display devices

A
  • Show result of processing
  • Allows user to make decisions by displaying options
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

Advantages of display devices

A
  • Allow interaction between the user and the computer
  • Provides immediate feedback
  • Displayed content is easily changed or updated
  • Font size can be easily adjusted
17
Q

Disadvantages of display devices

A
  • Not private
  • Consumes the most amount of power
  • Output is not permanent
  • Difficult to share
  • Most expensive part of computer to replace
  • Can cause eye strain if very bright and headaches
18
Q

Types of output

A
  • Sound
  • Touch
  • Visual
  • Other(electrical transmissions)
19
Q

Specifications that determine quality for monitors

A
  • Resolution: Number of pixels
  • Response time: How quickly pixels change colour
  • Aspect ratio: ratio between the length and width (16:10)
  • Colour ratio: the amount of shades between the darkerst black and lightest white
  • Lumens: How brigth the projected image is
  • DVI and HDMI: Replaces VGA port because they provide quality due to their signlas being digital
20
Q

Drivers

A
  • Allows your computer to communicate/connect to hardware and control it
21
Q

Plug-and-play

A
  • When you plug something into your device it automatically and immediately gets ready to make use of that device
22
Q

Input/output for disabled people

Blind

A
  • Braille keyboards
  • Braille mouse
  • Braille printer
  • Large keyboard
23
Q

Input/output for disabled people

Deaf

A
  • Flashing screens
  • Vibrations
  • On screen output