Chapter 10
CHAPTER 10: INPUT, OUTPUT AND USER INTERFACE
1. Features Of A Quality System
i. Content
ii. Visual
iii. Attractiveness
iv. Preformatted Screen
v. Interactive Feedback
vi. Online real-time
vii. Integration
viii. Programmed Edit Format Checks
ix. Mathematical Accuracy
x. System Integration
2. Characteristics Of Quality Information System
i. Fit
There must be a fit between the technology and the task and also between the individual characteristics and the technology
ii. Understandability
Understandability of the users of the system
iii. Accurate
Ensure that its data are accurate and it provides accurate output.
iv. Flexible
It must be flexible so that it can easily
v. User friendly
Easy to use, easy to learn and easy to understand.
3. Input Design
i. Paper Based Input
- To reduce error, speed up completion and facilitate entry of data, it is essential that documents be easy to fill up
ii. Paperless Input
- Means capturing the data in an electronic format at its original source or as close to the original source as possible.
- Characteristics of good paperless input:
1. Minimum keystrokes
2. Good screen design.
3. Simple screen and consistent – three section heading, body, comments and instruction
4. Visual attractiveness
5. Have title form on it
4. Output Design
- It is the report that the info system procedures on screen or on paper or In other media such as the internet.
- Types of report
1. Detailed Report
Used to present information that shows information with minimum filtering.
2. Exception Report
An internal report that shows filtered information intended to report a specific condition.
3. Summary Report
Normally generated for the use of upper level management who are often concerned with totals and do not want to see all the supporting detail.
5. Hardcopy Output
- 2 matters that need to consider when designing printed reports:
i. Functional Attributes
- It includes
1. Heading or title
2. Page Number
3. Date of preparation
4. Column headings
5. Grouping of related data items
ii. Stylistic Attributes
- Printed reports should be well organized from top to bottom and left to right
- Additional blank spaces between columns also contribute to the readability of a report.
6. Softcopy Output
- Increasingly popular with client-server technology
- Screen output can be viewed from any location that allows access to database
- User can view a report within moments of requesting it
7. User Interface Design
- It establishes dialogues, two way communication, between users and the computer system.
- Most of it uses windows, menus, icons, and a mouse.
- Goal of user interface design is to make the system acceptable and as user friendly as possible to the users.
8. Common User Interfaces
- Menu Method
Presents the user with a set of actions and requires the user to select one of them
- Prompt (Q&A) Method
It asks the user for specific input.
- Template Method
It is equivalent to documents on a computer but the difference is it presented on the screen.
9. Good User Interface Design
i. Designing effective feedback features
ii. Message feature where in which the system responds to a user and informs him or her of the status of the interaction
iii. Online help which display a window of text that explain concepts, procedures, menu choices, function keys, formats and so on.
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