Step2 Understand the Business Function Lecture5 Computer Systems

Step-2: Understand the Business Function Lecture-5 Computer Systems Interface 1

General steps n n n Perform a business definition & requirements analysis Determine basic business functions Define current activities through task analysis Develop a conceptual model of the system Establish system usability design goals Define training & documentation needs Computer Systems Interface 2

Business def. & Reqs analysis n n n To establish the need for a system A requirement is an objective that must be met Product description is developed & refined, based on input from users, marketing, or other interested parties. Computer Systems Interface 3

Information collection techniques n - Direct methods: Individual face-to-face interview Telephone interview or survey Traditional focus group Observational field study User-Interface Prototyping * Know thy users, for they are not you. Computer Systems Interface 4

Information collection techniques (cont. ) n - Indirect methods: MIS, Support, Marketing intermediary Paper/electronic survey or questionnaire E-Mail, Bulletin Boards, or Guest Book Competitor analysis Other media analysis Computer Systems Interface 5

Defining the Domain n What people say they do and what they actually do are often different – because people are not always aware of how they work. Computer Systems Interface 6

Determining Basic Business Functions n n n A detailed description of what the product will do Major system functions are listed & described A flowchart of these is developed Understanding user’s needs & the user’s profile A user task analysis Computer Systems Interface 7

Developing Conceptual Models n n n - Defining objects Defining metaphors Describes how the interface will present: Objects Relationships Properties actions Computer Systems Interface 8

Q/A n Develop conceptual model for your team project. Computer Systems Interface 9