HCI

• HCI is a discipline concerned with the design, evaluation, and

  implementation of interactive computing systems for human use and with the

  study of major phenomena around them
• Increase automation Machines can now work constantly without having a break producing more accurate outputs than manual labors. Increasing automation leads to improving productivity.
• Quicker and accurate inputs

  High technology devices can read data automatically making things much

  easier, quicker, more accurate and reducing complexity than manual inputs.

  Speed up and accurate inputs leads to quicker and correct outputs
• Shop at ease

  Shopping online is more convenient for users since they can purchase

  whatever they want without needing to leave their home
• Mobile communication

  Allows different companies to make a deal or talk about the business over

  the internet or phone lines reducing both time and money for going manually.
• Specialized interfaces

  Technologies like voice input, text-to-speech and thought input helps

  disable people to interact with the computer more efficiently and that affect to

  economy because even disable people would be useful person which in turns

  improve the productivity of the economy.
• Ease of communication

  The ways we communicate is no

  longer limited to letters or face to face.

  Mobile technology has enabled people to

  communicate to anyone, anywhere,

  whenever they want.
• Improved usability

  Later electronic devices make sure

  the input and output processes are as

  simple and easy for the users as possible. examples of user-friendly devices are

  touch screen, voice recognition and non-motion-sensing controller
• Remote Control

  Remote controlled machines have been created for the purpose of allowing

  people to explore dangerous environments in complete safety. This is a much

  safer way to go to these missions than sending in real people.
• Specialized interface

  High technology devices allow people with disabilities to help themselves

  without much help from anyone.
• Improved social aspect

  Everyone gets a chance to learn about other cultures and traditions. Being

  able to understand one another will prevent causing offense and will open up

  new relations to other countries
• Minimize language barriers

  Computers and smartphones can now help to translate other languages

  just by typing or saying words in native language and it will respond with

  translations in their chosen language
• Develop living standards

  HCI enabled people to communicate without having to be connected to

  something by a wire, people tend to surf on internet for information’s rather than

  reading hardback book, and even young children nowadays are exposed to a lot

  of technology
• Deskilling

  , work is when one’s job is replaced with a machine which will

  be able to do the job quicker, faster and for a lot cheaper. As technology

  improves, people will dependent on machinery limiting their ability and thinking

  power to know how things will work.
• Discoveries in all industries

  Technological advances allow people to find a more efficient way of doing

  things, and these processes deliver positive results.
• Cost Efficiency

  Through technology it is possible to improve processes and execute new

  ways of carrying out task. Thanks to this, machines can produce the same

  results as humans – or even better results – in certain industries.
• Easy to access Information

  Access to relevant information anytime, anywhere has become

  commonplace. This has been possible thanks to modern technologies such

  as broadband internet
• Better Communication

  It can be said that communication is like water for life: we cannot develop

  without communication. Modern technology has developed many

  advanced technology tools in the field of communication.
• Improvements in way of travelling

  Modern transportation technologies make it very easy to travel over long

  distances. Transport is an important element in the lives of human and

  the business world.
• Weapons of Mass Destruction

  Modern technology has been the great ally in the increase and permanence

  of many wars and conflicts. Technology help in the manufacture of modern

  war weapons that require testing.
• Social Isolation

  Social isolation is increasing;

  People are spending more time

  playing video games, learning

  how to use modern technologies,

  using social networks and

  surfing the internet, ignoring

  their real lives.
• Input-output channels

  In interaction with a computer, human input is the data output by

  the computer vice versa. Vision, hearing and touch are the most important

  senses in HCI.

  • Vision

  • Hearing

  • Touch

  • Movement
• Short-term memory

  is used to store information which is only required fleetingly. STM

  can be accessed rapidly, however, also decays rapidly.
• Long-term memory

  -It has an unlimited capacity, a slow access time in forgetting occurs more

  slowly or not at all. There are two types of LTM: Episodic memory

  represents our memory of event and experiences in a serial form
• Reasoning

  is the process by which we use the knowledge we have to

  draw conclusions. There are three different types of reasoning
• -Deduction: reasoning derives the logically necessary conclusion from

  the given premises
• -Induction reasoning is generalizing from cases we have to seen to

  infer information about cases we have not seen.
• -Abduction: reasons from a fact to the action or state that caused it.
• Problem solving

  The process of finding a solution to an unfamiliar

  taste, using knowledge that we have. Different views of problem

  solving are:
• Gestalt Theory: states that problem solving is both

  productive and reproductive; insight is needed to solve a problem
• -Problem space theory: comprises problem states and

  problem solving involves generating these states using legal state transition

  operators.
• Use of analogy: Problems are solved by mapping knowledge relating to a similar

  known domain to the new problem.
• Skill Acquisition

  According to the ATC model, Skills are acquired through various

  levels.
• Errors and mental models

  There are different types of errors: change in context of skilled

  behavior can cause errors. An incorrect understanding/model of a

  situations can cause errors too.
• Emotions

  Our body respond biologically to an external stimulus and we interpret

  that in some way as a particular emotion.
• Individual Differences

  The principle and properties discussed apply to the majority of people, but

  humans are not all the time
• Computer

  Interaction (With or without computer) is a process of information transfer
• Chord keyboards

  -on ____keyboards, only a few keys are used

  Letters are produces pressing multiple keys at once.
• Phone pad and T9 entry

  -The numeric keys on a cellphone can be pressed more than once to enter

  letters. Most phones have 2 keypads modes: a numeric and an alphabetic

  mode.
• Handwriting recognition It deals mostly worth stroke information: the way in which letter is

  drawn, not the letter itself