CS408 Midterm Solved Subjective with References

CS408 - Human Computer Interaction · SHORT QUESTION ANSWER FOR MID TERM · Qno.1 Define Attention

Answer: Attention is the process of selecting things to concentrate on, at a point in time, from the range of possibilities available

Qno.2 Define Recognition

Answer: Recognition refers to act of recognizing or the state of being recognized, identification of something as having been previously seen, heard, and known as.

Qno.3 what is the difference between Tertiary and Analogous colors? [2]

Answer: These are the colors formed by mixing one primary and one secondary color.

TERTIARY COLORS

Yellow-orange, red-orange, red-purple, blue-purple, blue-green and yellow-green. Analogous colors are any three colors, which are side by side on a 12 part color wheel, Such as yellow-green, yellow, and yellow-orange. Usually one of the three colors Predominates

Qno.4 Comment to justify the following statement.

“Most users are neither beginners nor experts; instead they are intermediates”

What are the pointing devices? Explain trackball as pointing device? [2+3]

Answer: According to the statement pointing devices will help for the beginner user because we can use to deal easily with requirement. Pointing devices are input devices that can be used to specify a point or path in a one-, Twoor threedimensional space and, like keyboards, their characteristics have to be considering in relation to design needs. Pointing devices are as follow:

• Mouse
• Touch pad
• Track ball
• Joystick
• Touch screen
• Eye gaze

Trackballs is other alternatives. The user is presented with a cursor on the screen that is controlled by the input device. Qno.5 Consider the vertical scroll bar of a web browser or word processor. For each of Norman’s five principles below, give one way that the scrollbar uses the principle for effective design. Describe the interface model of the scroll bar in one sentence.

[2*5] · Affordance: · Constraints: · Mapping: · Feedback:

Answer: As consider the vertical scroll bar of a web browser or word processor. According to the Norman’s principles we design the scrollbar uses the principle for effective design that users should see and do when carrying out their tasks using an interactive product. Here we briefly describe which is given:-

to use it.

Constraints:

The design concept of constraining refers to determining ways of restricting the kind of user interaction that can take place at a given moment. There are various ways this can be achieved. An Interface design in graphical user interfaces is to deactivate certain menu options by shading them, thereby restricting the user to only actions permissible at that stage of the activity.

Physical constraints

Logical constraints

Logical constraints rely on people’s understanding of the way the world works

 Culture constraints

Culture constraints rely on learned conventions, like the use of red for warning, the use of certain kinds of signals for danger, and the use of the smiley face to represent happy emotions

Mapping:

This refers to the relationship between controls and their effects in the world. Nearly all artifacts need some kind of mapping between controls and effects, whether it is a flashlight, car, power plant, or cockpit. An example of a good mapping between controls is effect is the up and down arrows used to represent the up and down movement of the cursor, respectively, on a computer keyboard.

Feedback

Related to the concept of visibility is feedback. This is best illustrated by an analogy to what everyday life would be like without it. Imagine trying to play a guitar, slice bread using knife, or write a pen if none of the actions produced any effect for several seconds. There would be an unbearable delay before the music was produced, the bread was cut, or the words appeared on the paper, making it almost impossible for the person to continue with the next strum, saw, or stroke. Feedback is about sending back information about what action has been done and what has been accomplished, allowing the person to continue with the activity. Various kinds of feedback are available for interaction design—audio, tactile, verbal, visual, and combinations of these.

Qno.6 As a product designer what you need to do for constructing personas. Write all steps

Being a product designer we use to do constructing personas steps:-

1. Revisit the persona hypothesis
2. Map interview subjects to behavioral variables
3. Identify significant behavior patterns
4. Synthesize characteristics and relevant goals.
5. Check for completeness.
6. Develop narratives
7. Designate persona types

Qno.6 you are product designer. You are making plan to introduce a shampoo. Just one type of shampoo for every user. Is this plan good or not. Answer yes or no, and support your

No! it is not a good plan and being product designer, we are making plan to introduce a shampoo for every one, It also includes performance things like how well it cleans, what the foam looks and feels like and how irritating it will be. Often consumer testing is employed to help with determining these characteristics.

The basic ingredient in a shampoo formulation is as follows for the betterment of gathering market. Water. It helps dilute the detergents, makes the formula easier to spread and reduces irritation. It also keeps the formula inexpensive