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Exam overview - Coggle Diagram

- - - - There are displays that are touch enabled and displays that are not touch enabled. Touch-enabled displays allow the user to physically touch the screen as part of the interaction. Displays that are not touch enabled will require another interaction method such as a mouse r tracker pad.
      - Touch-screen devices are becoming more common, ranging in size from smart watches, and smartphones to interactive advertising boards and smartboards in the classroom.
    - - Light emitting diodes (LEDs) are similar to LCDs, but LED displays generate their own backlight. This means that a backlight does not have to be built into the device. This means that sunlight does not affect the view seen. However, the colour representation and contrast are not as good as other display types. An LED display uses vey little power.
    - - Liquid crystal displays (LCDs) are usually found on a range of devices including smartphones, laptops and PCs. LCDs use a separate backlight to illuminate the display from behind. This means that sunlight does not affect the view seen. However, the colour representation and contrast are not as good as other display types.
      - An extra layer is placed on top of the LCD element to provide touch-screen ability. Without this the display would require another device to enable any interaction with an HCI. This type of display can also be navigated using a remote control, for example on a smart TV and smartboards.
    - - An organic light emitting diode (OLED display produces its own light. This means it uses less power and its thinner than LCD and LED displays. OLEDs are more flexible and can contain the touch response layer in the display itself. Using an OLED means that screens can be folded or rolled.
- - - - Not suitable for inputting large amounts of data.
      - Not very accurate - selecting detailed objects can be difficult with fingers.
      - Tiring to use for long periods.
      - More expensive than alternatives such as a mouse.
      - Not robust - can soon become faulty if misused.
    - - It is a slow method when you need to write a long piece of writing when there are faster ways such as scanning and dictation.
      - Can cause strain injury by typing too much.
      - It is quite hard for people who don't have touch-typing skills which could cause a lot of problems such as accuracy and frustration.
    - - Errors and confusion arise when the application fails to understand the user's accent.
      - Challenges with the accuracy voice-recognition systems.
      - VUIs use of natural language processing (NLP)
      - Ethical considerations in VUI development.
      - Users' high demands and expectations.
      - functionality issues.
- - - - Large numbers of people can be asked to fill in the same survey.
      - Comparisons are easy to formulate (for example, 75% liked the new company logo).
      - Cheaper than interviews for large numbers of people.
    - - People need technology and a stable connection to be able to complete it.
      - A badly designed question may not get the data required in the right format.
  - - - Email: Data and information can be gathered using email. An email can be sent that includes an interactive for to be completed or a link to an online questionnaire or survey.
      - Interview: An interview is a conversation between two people in which questions are asked. For this reason, interviews are usually completed one to one, face to face. The questions to be asked need to be planned in advance, based on how the data and information collected will be processed. \the interviewer asks questions of the interviewee.
      - Online question/ surveys: A questionnaire/survey contains a set of questions that are designed to collect data and information from the people completing the questionnaire or survey. A range of types of questions can be asked, including: closed question, open question, rank order, rating.
        Online questionnaire and surveys are technology-based. The questionnaire/survey can be provided by email, on a website or in the cloud.
    - - Books and magazines: Can be used to collect data and information. However, the data and information these include can be out of date. This is because of the time it takes for these to be published.
      - Government statistics and websites: A wide range of statistics that have already been collected can be found on websites. These statistics can be analysed to provide further data and information.
  - - - Check that the data being entered into a digital system is sensible and reasonable
      - Does not check that data is correct
      - Checks the data pre-set rules
      - Usually carried out by the digital system at the point at which the data is being entered
      - Usually set as part of the creation of a solution