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User Interface Design
- 1. IS 431 Chapter 9 User Interface Design Group 13 Jason Reifman Keni Osada Chris Verdin Introduction Principles for User Interface Design User Interface Design Process Navigation Design Input Design Output Design Summary End
- 2. IS 431 Chapter 9 Introduction Introduction Principles for User Interface Design User Interface Design Process Navigation Design Input Design Output Design Summary End
- 3. IS 431 Chapter 9 Introduction Who’s presenting what? Introduction Principles for User Interface Design User Interface Design Process Navigation Design Input Design Output Design Summary End
- 6. IS 431 Chapter 9 Principles for User Interface Design Goal Introduction Principles for User Interface Design User Interface Design Process Navigation Design Input Design Output Design Summary End
- 16. IS 431 Chapter 9 Principles for User Interface Design User Experience & new techology What the future holds for user interface. Microsoft’s Surface Touchscreen technology is becoming more and more prevalent. What type of effect will it have on business transactions? Introduction Principles for User Interface Design User Interface Design Process Navigation Design Input Design Output Design Summary End
- 20. IS 431 Chapter 9 User Interface Design Process Use Scenario Development Introduction Principles for User Interface Design User Interface Design Process Navigation Design Input Design Output Design Summary End
- 24. IS 431 Chapter 9 User Interface Design Process Interface Standards 1. Interface Metaphor Set of user interface visuals, actions, and procedures from real world that is used as a model for the computer system. e.g. File and folder representation of operating system, Desktop representation 2. Interface Template Defines general appearance of all screens Defines standard placement and order for common interface action Introduction Principles for User Interface Design User Interface Design Process Navigation Design Input Design Output Design Summary End
- 25. IS 431 Chapter 9 User Interface Design Process Interface Standards 3. Interface Objects Fundamental building blocks of the system such as entities and data stores e.g. Shopping Cart 4. Interface Actions Actions within interface objects e.g. add item, delete item, modify amount , etc 5. Interface Icons Introduction Principles for User Interface Design User Interface Design Process Navigation Design Input Design Output Design Summary End
- 37. IS 431 Chapter 9 Navigation Design Messages Example of inappropriate error message Introduction Principles for User Interface Design User Interface Design Process Navigation Design Input Design Output Design Summary End
- 45. IS 431 Chapter 9 Input Design Types of Input Forms Introduction Principles for User Interface Design User Interface Design Process Navigation Design Input Design Output Design Summary End
- 47. IS 441 Chapter 9 Input Design Input Validation (Edit Checks) continued Introduction Principles for User Interface Design User Interface Design Process Navigation Design Input Design Output Design Summary End
- 50. IS 431 Chapter 9 Output Design Types of Outputs Introduction Principles for User Interface Design User Interface Design Process Navigation Design Input Design Output Design Summary End
- 52. IS 431 Chapter 9 The End Any Questions? Introduction Principles for User Interface Design User Interface Design Process Navigation Design Input Design Output Design Summary End
Notas do Editor
- GUI uses windows, menus, icons, and a mouse. It is the most common type of interfaces most students are likely to use personally and for developing systems.
- Navigation examples. – buttons & menus Input example – forms for adding new customers Output examples – reports and webpages
- Novice prefer interfaces with low density and more experienced uses like higher density. The book suggests using < 50% white space for novice users and approach 90% for the more experienced users.
- Consider adding menus with all available functions for Novice and adding shortcuts for the expert Where there is low employee turnover, some training can lessen the impact of less precise interfaces
- Example; many users are familiar with the Web, so the use of web-like interfaces can reduce the amount of learning required. Can reuse their web knowledge to reduce the learning curve of the new system.
- What is Input Design? Designing screens used to enter the information, as well as any forms users write or type information What is the goal of input design? To capture information for the system simply and easily. Reflect the nature of the inputs and ways to simplify their collection.
- Basic Principles Use Online and Batch Processing Appropriately Capture Data at the Source Minimize Keystrokes
- Online Processing Immediately records the transaction. Used when it is important to have real-time information about the business process . Think of online processing as (TicketMaster) – You buy your seats online and immediately after those seats are no longer available. Batch Processing Collects inputs and enters them at a later time in a batch. Used when real-time processing information Think of Batch processing as (Time cards) – They are entered in at the end of the day or end of the week.
- Capture data at the source - is the most important principle of input design. Capturing data at the source eliminates duplicate work, decreases processing time, decreases cost because its not being done twice, and reduces probability of error. When too many people handle something it increases a chance for error or it being misplaced.
- Capturing data at the source can be done in many ways. Such as Source Data Automation – Using special hardware devices to automatically capture data without requiring anyone to type it. Examples of this are Bar Code Reader – Supermarket checkout Optical Character Recognition - Checks Magnetic Stripe Readers – Credit Cards Smart Cards – Credit Card Sized Calculators Radio Frequency Identification Tag (RFID) – Broadcast its information to electronic readers.
- Minimize Keystrokes System should never ask for information that can be obtained in another way. (retrieving from database or a calculation) This can be done using lookups, drop down lists, and default values.
- In Input Design there are different Types of Inputs Such As Data items linked to fields Text which is Used to enter text & can have a fixed length & can be scrollable. Numbers which are Used to enter numbers and Can automatically be formatted to currency or a date. And Selection Box which Enables the user to select a value from a predetermined list. Should be arranged in a meaningful order. (alphabetical, most frequently used) Examples of selection boxes include Check Boxes Radio buttons On screen list boxes Drop-down list boxes Combo buttons Scroll bars (Slider)
- Here is an example of an input form. It has text box to enter your name, radio buttons to select your major, Check boxes to select software your comfortable using, On screen list box to select your hair color, drop down list box to select where you were born, and a slider to chose the level of interest.
- Input Validation also referred to as (Edit Checks) is used To prevent invalid information from entering the system 1 Completeness Check – that all required data have been entered. 2 Format Check – that data are of the right type and in the right format. 3 Range Check – that numeric data are within correct minimum and maximum values 4 Check Digit Check – check digits are added to numeric codes 5 Consistency Check – that combinations of data are valid. 6 Database Check – Compare data against a database or file.
- Here is more of a detailed description of input validation. A lot of it is pretty self explanatory.
- Basic Principles of Output Design to present information so users can accurately understand it with the least effort Understand Report Usage Read cover to cover because all information is needed. Used as references to find information or to identify specific items. Frequency is either Real-time reports like (Stock Market Quotes) or Batch Reports like (Totals, Summaries, Historical Averages)
- Manage information Load - Give managers only the information they need and nothing more. Most managers get too much information. Minimize Bias - The order of presentation should match the way in which the information is used. The problem with bias is that it can be very subtle and it can be introduced unintentionally By the way data is sorted.
- Detail Reports – detailed information about all the items requested Summary reports – lists summary information about all items Turnaround document – Outputs that “turn around” and become inputs Graphs – Charts used in addition to and instead of tables and numbers.
- User interface Design principles - Layout of the screen, form, or report. Design should help user be aware of content and context. Should be aesthetically pleasing. Designed to support first-time users and experienced users. User interface Design Process – Develop, design, define, prototype, and evaluation. Navigation Design – Make the system simple to use. Simplify the recovery for mistakes. Input Design – Capture accurate information for the system using online or batch processing, capture data at the source, minimize keystrokes and validate data entered. Output Design – Present information so users can accurately understand it. Design reports to minimize overload and bias. Types of reports in output design are – detail reports, summary reports, exception reports, turnaround documents, and graphs.
- Any Questions?