Answer to Question #175569 in Web Development for Enam

Question

Question 4 a)

The Human-Computer Interaction (HCI) involves two main entities, these are the human entity and the computer entity. To help in designing a usable computer system, we need to understand the human aspects from the cognitive, social, and organizational perspectives. Assuming you are the lecturer for the day, explain stating the difference between these three (cognitive, social, and organizational) perspectives.

b) The arrangement of information on the interface’s display is important to avoid frequent movement of eyes by users while searching for information. The frequent movement of eyes would cause the eyes to constantly refocus and this action would easily tire the eyes. Elaborate on five (5) on considerations in designing a system interface.

c) Color plays an important role in determining the identity and shape of an object. Explain in your own words the three components that forms color. 

Answer 1

a) Cognitive aspect: application design and engineering.

Social aspect: interaction between technology and organization.

Organizational aspect: usability of HCI.

b) - Design Dialogs to yield closure.

• Prevent Errors.
• Permit easy reversal of actions.
• Support internal locus of control.
• Reduce short term memory load.

c) Every color can be described in terms of having three main attributes: hue, saturation and brightness.

Hue is identified as the color family or color name (such as red, green, purple). Hue is directly linked to the color's wavelength.

Saturation, also called "chroma," is a measure of the purity of a color or how sharp or dull the color appears.

Brightness, also called "luminance" or "value," is the shade (darkness) or tint (lightness) of a color. Areas of an evenly colored object in direct light have higher brightness than areas in shadow.