Friday, September 11, 2009

Human-Computer Interaction / Man-Machine Interaction

Content:
Human-Computer Interaction(HCI) is the study of how humans interact with computers, and how to design computer systems that are easy, quick and productive for humans to use. As its name implies, HCI consists of three parts: the user, the computer, and the ways they integrate together.

One important HCI factor is that different users display different "cognitive styles", forming different conceptions or mental models about their interactions and have different ways of learning and keeping knowledge and skills. Another consideration in studying or designing HCI is that user interface technology changes rapidly and new interfaces root out.

Basic Principles of HCI -
1. Requirements Analysis
Establish the goals from the standpoint of the user and the business and aim for usability requirements.
2. Conceptual Proposal
Outline the design & architecture and identify essential features.
3. Prototyping
Create mock ups or prototypes of the product and evaluate usability using a proven method.
4. Development
Create the final product and evaluate functionality through quality assurance, usability testing, and field testing.
5. Launch and Housekeeping
Launch the product and maintain feedback from testers and users(housekeeping).

The Example I would consider for HCI is BARCODE SCANNER.

Pros :
Accuracy
Ease of implementation
Operational efficiency and speed
Data integrity

Cons :
Cost
Working range
Durability

Posted by
Harsha Undapalli

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