• Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month

Human Computer Interaction

Extracts from this document...

Introduction

Computer Interaction * Describe the key features of event driven programme: In computer programming, event driven program is a programming paradigm in which the flow of the programme is determined by a user actions (mouse clicks and key presses) or messages from other programs or objects. Event Driven Programs include Word processing, Database and other packages for drawing. This programs used with GUI operating systems. Key Features of Event Driven Program - Event Driven Programs have Event handlers, (user enter the code to run the event). - Event loops in event driven programs, keep checking if event happens. - Forms hold many objects that are used for events. - Trigger functions decides which codes can be used when an event happens. ...read more.

Middle

The event loops is a programming that waits for and dispatches event of messages in a program. It works by polling some internal and external Event providers that generally blocks until an event arrived and then calls the relevant event handlers. Event driven programming allows the user to create bespoke event loop to improve the functionality of programs. Forms Forms are main key feature of Event Driven programs, when a user runs an event, the user can see this forms. It contains all the objects or controls the programmer used to create the programs. Forms also have controls that have a collection of event which a programmer can use. The form event controls a program when the event or program loads and ends. ...read more.

Conclusion

Event driven program language environment such as Visual basis allows creating controls, when a user creates this control, the user defines or able the trigger functions. * Describe, with Examples, typical uses and advantages of event driven programs: Flexibility: It allows you have many controls to use codes, where to use them and how to place them. All objects have a control, for example, you can add text in a text box. Simple and quick to program: When you start to create objects, you can easily resized them and move, these all objects come with accessible properties. Suitable for Graphic User Interface: You can get lots of objects from this * Demonstrate the use of event driven tools and techniques: * Design and implement two different working event driven applications to meet defined requirements: * Test and document event driven applications ?? ?? ?? ?? Ambreen Kauser ID: 354842 Unit: 13 & 20 BTEC National Certificate ICT ...read more.

The above preview is unformatted text

This student written piece of work is one of many that can be found in our AS and A Level Management & Manipulation of Information section.

Found what you're looking for?

  • Start learning 29% faster today
  • 150,000+ documents available
  • Just £6.99 a month

Not the one? Search for your essay title...
  • Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month

See related essaysSee related essays

Related AS and A Level Management & Manipulation of Information essays

  1. Analysis of market, environmental forces, competitors, marketing mix and consumer implementation.

    Sony has also reduced the price of the PSX 2 just before the launch of its rivals. This could have two effects. * The customers will notice that prices do not vary significantly between the competitors and therefore they will effectively remove the console's cost and possibly focus on the other advantages such as DVD player on the PSX 2.

  2. Standard Operating Procedures (Sop) recruitment policies and procedures.

    � Enter in the Certification ID# and RETRIEVE. � Fill in the blanks. � To select the applicants who will appearing for the interview, you must place a "Y" in the box on the left side of the corresponding applicants.

  1. Improving the Systems behind Arrowhead Printers Ltd.

    _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

  2. Background and investigation for designing a database for a DVD rental shop.

    What time of year is the busiest for your business? Winter is the busiest time of year for us as people spend more time indoors. This means they rent more DVDs. 10. How many DVDs does the business have? We roughly have 250 DVDs in stock.

  1. Uses of ICT in Varndean

    Varndean wouldn't be able to receive e-mails from potential buyers and be able to send e-mails for advertising your company. Also you wouldn't be able to print out documents if you didn't have a printer. Also you wouldn't be able to back up documents onto CDs without a CD copier, which is very important.

  2. Database Design

    description Text The product's description Unit Price Currency The price of the product Supplier ID Number 3 Cannot exceed 3 characters The supplier's ID number Stock Number How much stock is available Supplier Table: Attribute name Data type Size Validation rule Description Input Mask Supplier ID Number 3 Cannot exceed

  1. Human Computer Interaction

    ?High-resolution TFT Color Display (480 x 320 dots, 65,536 colors). ?Built-in 310K Pixels CMOS Camera with 2x Digital Zoom (JPEG, 640 x 480 resolution). ?Built-in Audio Player (Compatible with MP3 and ATRAC3 audio formats)*2. Built-in Video Player [Compatible with QuickTime file format*, MPEG1 (MPEG Movie)] ?Jog Dial(tm)

  2. An analytical report to discuss the HEG Infoway project, its implementation and the reasons ...

    database, search the customer and potential customer based on defined criteria, keep track of offerings and pending offering, updation of tour report after returning from customer visit, order management system. 2.2 Software Development Company: For the development of this project, they chose, Bhilwara Infotech Limited (BIL), a software development company from their own group.

  • Over 160,000 pieces
    of student written work
  • Annotated by
    experienced teachers
  • Ideas and feedback to
    improve your own work