Introduction To Human Computer Interaction (HCI) CHAPTER 1

IMPLICATIONS OF HCI IN SOCIETY

1. Ease of communication 2. Improved usability 3. Remote control 4. Specialized interface

displayed on normal screens using shadows, depth etc Users can enter a VR cave, where the VR world is projected around them.

3d displays

It can be said that communication is like water for life: we can not develop without communication. Modern technology has developed many advanced technology tools in the field of communication.

Better communication

means that the display is made of a fixed number of dots or pixels in a rectangular grid.

Bitmap displays, resolution and color

The study of the physical characteristics of the interaction.

Ergonomics

allows you-to control the computer by 'looking at it, while wearing special glasses, head mounted boxes etc.

Eyegaze

detect the position of the user's finger or stylus on the screen itself and are therefore very direct.

Touch-sensitive screens (touchscreens)

touch-sensitive tablets, operated by sliding the finger over it and are mostly used in notebook computers.

Touchpad

is an upside-down mouse: instead of moving the device itself, the ball is rolled to move the cursor.

Trackball

Modern technology has been the great ally in the increase and permanence of many wars and conflicts. Technology helps in the manufacture of modem war weapons that require testing.

Weapon of mass destruction

Shopping online is more convenient for users they can purchase whatever they want without needing to leave their home.

Shop at ease

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.

Social isolation

High technology devices allow people with disabilities to help themselves without much help from anyone.

Specialized interface

Technologies like voice input, text-to-speech and thought input helps disable people to interact with the computer more efficiently

Specialized interfaces

is relatively low, even for a restricted vocabulary. Adjusting the system for use with natural language gives birth to even more problems: the 'errors' in natural language use, different voices, emotions and accents etc.

Speech recognition

text entry devices

Speech recognition Handwriting recognition Phone pad and T9 entry Chord keyboards

For more accurate positioning, systems with touch-sensitive surfaces often emply a stylus.

Stylus and lightpen

In LCD's a thin layer of liquid crystals is sandwiched between two glass plates. External light passes through the top plate and is polarized.

Technologies

The presence of other in a work environment affects the performance of the worker in any task, for, example, by 'completion-behaviour'.

The context of the interaction

Display Devices

- Bitmap displays, resolution and color - Technologies - Large displays and situated displavs - Digital paper

Devices for Virtual Reality and 3D Interaction

- Positioning in 3d - 3d displays

Positioning, Pointing and Drawing

-The mouse -Touchpad -Trackball and thumbwheel -Jovstick and keyboard nipple -Touch-sensitive screens (touchscreens) - Stylus and lightpen - Digitizing tablet - Eyegaze - Cursor keys and discrete positioning

ADVANTAGES OF HUMAN COMPUTER INTERACTION

1. Discoveries in all industries 2. Cost efficiency 3. Easv to access information 4. Better communication 5. Improvements in way of travelling

IMPLICATIONS OF HCI IN CULTURE

1. Improved social aspect 2. Minimized language barriers 3. Develop living standards 4. Deskilling

IMPLICATIONS OF HCI IN ECONOMY

1. Increase automation 2. Quicker and accurate inputs 3. Shop at ease 4. Mobile communication 5. Specialized interfaces

DISADVANTAGES OF HUMAN COMPUTER INTERACTION

1. Weapons of mass destruction 2. Social Isolation

onlv a few kevs are used. Letters are produces Dressing multiple keys at once.

Chord keyboards

Through technology it is possible to improve processes and execute new ways of carrying out tasks.

Cost efficiency

For 2D-navigation, cursor keys can sometimes be preferable. The same goes for remote-controls and cellphones.

Cursor keys and discrete positioning

It 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.

Deskilling

enabled people to communicate without having to be connected to something by a wire. people tend to surf on Internet for information rather than reading hardback book

Developing living standards

Thin flexible material that can be written to electronically, but keeps its contents when removed from the power supply.

Digital paper

is a device used for freehand drawing.

Digitizing tablet

Technological advances allow people to find- a more efficient way of doing things, and these processes deliver positive results.

Discoveries in all industries

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.

Ease of communication

Access to relevant information anytime, anywhere has become commonplace. This has been possible thanks to modern technologies such as broadband internet.

Easv to access information

A set of processes, dialogues, and actions through which human user employs and interacts with a computer.

HCI

It deals mostly worth stroke information: the way in which the letter is drawn, not the letter itself.

Handwriting recognition

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.

Human Computer Interaction (HCI)

Everyone gets a chance to learn about other cultures and traditions. Being able to understand one another will prevent causing offence and will open up new relations to other countries.

Improved social aspect

Later electronic devices make sure the input and output process are as simple and easy for the user as possible.

Improved usability

Modern transportation technologies make it very easy to travel over long distances. Transport is an important element in the lives of humans and the business world.

Improvements in way of travelling

Machines can now work constantly without having a break producing more accurate outputs than manual labors. Increasing automation leads to improving productivity.

Increase automation

is essential in determining the 'feel' of a WIMP environment.

Interactivity

There are two types of joysticks: absolute sticks and isometric sticks.

Jovstick and keyboard nipple

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.

Minimized language barrier

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.

Mobile communication

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

Phone pad and T9 entry

Humans can use a 3D-environment with a 2D-device (mouse). The human mind is therefore capable of handling multiple degrees of indirection.

Positioning in 3d

High technology devices can read data automatically making thing much easier, quicker, more accurate and reducing complexity inputs.

Quicker and accurate inputs

machines have been created for the purpose of allowing people to explore dangerous environments in complete safety.

Remote control

an indirect input device, because a transformation is required to map from the horizontal nature of the desktop to the vertical alignment of the screen

the mouse

offer less usability because they can only manipulate the horizontal and vertical movement of the cursor.

thumbwheel