What is HCI

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What is HCI?

• is the study of how people interact with
  computers and to what extent computers are
• -A process of information transfer
• User to Machine
• Machine to User
• -HCI is also referred to as Man Machine
  Interaction.
• HCI is what the user sees and includes
• The physical controls
• What the system looks like?
• How the system accepts input from the user?
• How the system responds to user input?
• How the system outputs the results of processing?

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Why HCI is Important

• HCI is extremely important when designing clear
  intuitive systems which will be usable for people
  with a varied range of abilities and expertise,
  and who have not completed any formal training.
• HCI takes advantage of our everyday knowledge of
  the world to make software and devices more
  understandable and usable for everyone.
• Ultimately, if a system is well designed with HCI
  techniques, the user should not even have to
  think about the intricacies of how to use the
  system. Interaction should be clear, intuitive,
  and natural.

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Describe the difference between the terms User
Interface(UI) and Human Computer
Interaction(HCI)

• User Interface(UI)
• UI is interaction between users and computers.
  The interface is the system designer's way of
  representing the system to the user It is often
  regarded as the intersection of computer science,
  design and several other fields of study. This
  includes interfaces and usability all the way up
  to, for example, how computers would be used to
  automate an assembly line to create efficiency.
  User interfaces should be designed to match the
  skills and expectations of its anticipated users.
  Basic rules is to keep simple, descriptive and
  fast, Give response to every action, Provide
  feedback on progress during long action System
  users often judge a system by its interface
  rather than its functionality. User Interface
  evaluation are to obtain feedback on how to
  improve the interface design and meets its
  usability requirements
•  
• Human Computer Interaction(HCI)
• HCI is the design, evaluation and implementation
  of interactive computing systems for human use.
  HCI is a broad term that covers all aspects of
  the way in which people interact with computers.
  Interaction between users and computers occurs at
  the user interface which includes both software
  and hardware. for example, characters or objects
  displayed by software on a personal computer's
  monitor, input received from users via hardware
  peripherals such as keyboards and mice. It is
  through with interface that the human gives
  instructions or supplies data to the computer and
  it is through this interface that the human
  receives feedback and other information from the
  computer and also Reduce short-term memory load.
  Most interfaces are dynamic and involve an
  interaction between the human and the computer.
  The importance HCI to improve productivity of
  individuals and organizations,cost reduction,
  improve support, organizational enhancement

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Computer
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Mobile Phone
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Mouse
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Sample video

• http//www.youtube.com/watch?viMx4Ov-Mfj4

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HCI Importance

• Daily Life,
• Business and Industry,
• Accessibility
• Software Success
• Untrained users

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Daily Life

• ATM machines, train ticket vending machines, and
  hot drinks dispensing machines are just a few
  examples of computer interfaces a person can come
  into contact with daily without needing to own a
  personal computer.
• HCI is an important factor when designing any of
  these systems or interfaces. Regardless if an
  interface is for an ATM or a desktop computer,
  HCI principles should be consulted and considered
  to ensure the creation of a safe, usable, and
  efficient interface.

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Business and Industry

• HCI is an important consideration for any
  business that uses computers in their everyday
  operation.
• Well designed usable systems ensure that staff
  are not frustrated during their work and as a
  result are more content and productive.
• HCI is especially important in the design of
  safety critical systems, such as, for example,
  those found in power plants, or air traffic
  control centers. Design errors in these
  situations can have serious results, possibly
  resulting in the death of many people

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Accessibility

• HCI is a key consideration when designing systems
  that are not only usable, but also accessible to
  people with disabilities.
• The core philosophy of HCI is to provide safe,
  usable, and efficient systems to everyone, and
  this includes those with different sets of
  abilities and different ranges of expertise and
  knowledge.
• Any system properly designed with HCI
  user-centered techniques and principles will also
  be maximally accessible to those with
  disabilities

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Software Success

• Good use of HCI principles and techniques is not
  only important for the end user, but also is a
  very high priority for software development
  companies.
• If a software product is unusable and causes
  frustration, no person will use the program by
  choice, and as a result sales will be negatively
  affected

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Untrained users

• Today, very few computer users actually read the
  manual accompanying the software, if one exists.
  Only very specialised and advanced programs
  require training and an extensive manual.
• Computer users expect to understand the main
  functionality of an average program within a few
  minutes of interacting with it.
• HCI provides designers with the principles,
  techniques, and tools necessary to design
  effective interfaces that are obvious and easy to
  use, and do not require training