hci

• define hci 


  allows communication between user and digital system
• whats the communication


  type

  touch

  gesture

  voice
• how can interaction be captured


  keyboard

  sensor

  camera

  microphone
• whats in a well-designed hci


  clear in its layout

  simple - so users can learn quickly

  provide feedback - when user makes error, clear message must be shown
• whats an embedded system


  built into a device or system and runs the device
• where can an embedded system be found


  cars

  fridges

  washing machines
• whats banking in a hci application areas


  user access and manage their online banking using mobile phone or pc
• how is banking used with a hci


  user logs in by scanning fingerprint, or typing username or password
• hows entertainment used with a hci


  gaming, cinema, tvs
• hows fitness used with a hci


  devices such as wearable trackers, smartbikes
• how does fitness work with a hci


  output - users show their progress

  input - users input their settings
• how is home appliances used with a hci


  run by embedded system with their own hci
• how is retail used with a hci


  website - user can categorise their preferences

  self checkout
• advantages and disadvantages of embedded system


  ability to set preferences but limited number of functions/options
• advantages and disadvantages of banking


  increased security but cannot access accounts if hci fails
• advantages and disadvantages of entertainment 


  offers personalised experience but if connectivity is lost, will no longer offer personalised experience
• advantages and disadvantages of fitness


  user activated whenever but input methods can be restricted
• advantages and disadvantages of home appliances 


  user activated whenever but if connectivity is lost, appliance wont work
• advantages and disadvantages of retail, 


  time saved using checkouts/websites, but if hci stops working no shopping can be completed
• what are the hardware considerations


  oled

  led

  lcd

  touchscreen
• define touchscreen display


  touch enabled

  smart watches

  smartphones
• define Liquid Crystal Display


  use a separate backlight to illuminate the display from behind so view isnt affected by sunlight

  laptops

  pcs

  smartphones
• define Light Emitting Diode


  generate their own backlight, illuminate the display from behind but use their own light, uses very little power
• define Organic Light Emitting Diode


  produce their own light, thinner, use less power, flexible
• describe display size


  size of display impacts how user uses hci
• what are the resources for a hci


  memory and processing power
• whats considerations for designing a hci


  processing power

  memory requirements

  cost of device

  size of display

  method of interaction
• whats an operating system (software consideration)


  allows the hardware to communicate with the applications on a device
• what is an operating system used on


  windows - pcs, laptops, tablets

  android - mobile devices, laptops

  chrome
• whats a gui


  visual interface made up of icons

  has menus with options that can be selected by user
• advantages and disadvantages of gui


  intuitive and easy to use but experienced programmers may find these slow
• whats a cli


  uses text to give the device instructions
• advantages and disadvantages of cli


  experienced user can interact quickly but user needs to learn/remember a large number of commands
• what are the user interaction methods


  touch and gesture

  keyboard and mouse

  voice commands
• define touch and gesture


  touch icons to open, zoom in, pan, rotate, select
• advantages and disadvantages of touch and gesture


  fewer buttons needed but screen can get dirty
• keyboard and mouse 


  used with pcs/laptops
• advantages and disadvantages of keyboard/mouse


  many are familiar with the layout but easy to make mistakes and can be time consuming
• define voice with a hci


  people say commands/keywords
• advantages/disadvantages of voice


  beneficial to those using assistive technology but can misinterpret words