) 1 Ways of presenting data Hard copy Hard copy Presentation graphics Presentation graphics Multimedia Multimedia Computer Aided Learning ( CAL) Computer Aided Learning ( CAL) Encyclopedia on CD-ROM Encyclopedia on CD-ROM CD-ROM and DVD CD-ROM and DVD Sound Sound MIDI MIDI Virtual Reality Virtual Reality

) 2 1. Hard Copy Printed information is called hard Copy Printed information is called hard Copy Main form of computer output. Main form of computer output.Advantages Everyone is used to using paper-based systems. Everyone is used to using paper-based systems. For legal reasons hard copies of some documents must be kept. For legal reasons hard copies of some documents must be kept. Paper-based documents are easier to read than computer screen displays. Paper-based documents are easier to read than computer screen displays. Paper-based documents can be used where a computer can not be. Paper-based documents can be used where a computer can not be.

) 3 Disadvantages Paper is expensive to buy and store. Paper is expensive to buy and store. Moving paper around an organisation takes time and money. Moving paper around an organisation takes time and money. The use of paper is not environmentally friendly. The use of paper is not environmentally friendly. Multiple printouts are often produced when only one copy is needed. Multiple printouts are often produced when only one copy is needed. Paper-based documents are easily damaged and/or lost. Paper-based documents are easily damaged and/or lost.

) 4 Presentation graphics Graphics consist of combination of diagrams,text and charts. Graphics consist of combination of diagrams,text and charts. It may be presented as slides. It may be presented as slides. When trying to communicate ideas or concepts to a single person or a large group of people, presentations are often the best way of doing this. When trying to communicate ideas or concepts to a single person or a large group of people, presentations are often the best way of doing this. Microsoft PowerPoint is a dedicated program for producing presentations that can use text, images, and sound. Microsoft PowerPoint is a dedicated program for producing presentations that can use text, images, and sound. Advantage: Advantage: Salespersons frequently use screens to display their products. Salespersons frequently use screens to display their products. Teacher deliver their lectures through this way Teacher deliver their lectures through this way They are more attractive (and therefore are more likely to gain and keep a watcher’s attention). They are more attractive (and therefore are more likely to gain and keep a watcher’s attention). They use two of the watcher’s senses (sight and hearing) rather than just one (sight). They use two of the watcher’s senses (sight and hearing) rather than just one (sight).

) 5 Multimedia Is the mixture of text and graphics with motion and sound, including video, audio, animations and photographs. Is the mixture of text and graphics with motion and sound, including video, audio, animations and photographs. It consists of an ordinary pc which has several devices attached to it. It consists of an ordinary pc which has several devices attached to it. The images may be controlled either using a mouse or keyboard. The images may be controlled either using a mouse or keyboard.

) 6 Advantages Is ideal for learning new things Is ideal for learning new things In a way, multimedia software can be an ideal teacher. In a way, multimedia software can be an ideal teacher. Learning boring topics can be made fun using multimedia. Learning boring topics can be made fun using multimedia.

) 7 Computer aided Learning (CAL) Computers can interact with students to enhance the learning process. Computers can interact with students to enhance the learning process. Students can use computer as problem solving tools. Students can use computer as problem solving tools.Advantage: The use of computers can reduce the time is spent to preparing teaching material. The use of computers can reduce the time is spent to preparing teaching material. It can also reduce the administrative load of teaching. It can also reduce the administrative load of teaching. Students can download different lectures which is available on different web sites. Students can download different lectures which is available on different web sites.

) 8 Encyclopedia on CD ROM The beauty of encyclopedia on CD-ROM is the small amount of space that they take up. The beauty of encyclopedia on CD-ROM is the small amount of space that they take up. The multimedia Version occupies a Single CD ROM. The multimedia Version occupies a Single CD ROM. It is very quick to search references as well. It is very quick to search references as well. you are not restricted to text either. you can also look at video,voice and history. you are not restricted to text either. you can also look at video,voice and history. You can also show the animations. You can also show the animations. Pictures are also included which may be printed out and used to understand your project. Pictures are also included which may be printed out and used to understand your project.

) 9 CD-ROM and DVD Without the technology of CD-ROM and DVD, multimedia would be impossible because the large storage capacity needed for images,animation and video clips. Without the technology of CD-ROM and DVD, multimedia would be impossible because the large storage capacity needed for images,animation and video clips. Easy to handle Easy to handle Hold almost 650MB of data Hold almost 650MB of data Store text,sound, graphics and images Store text,sound, graphics and images

) 10 Sound One features of a multimedia system is the use of speakers. One features of a multimedia system is the use of speakers. A special sound card contain chips that enable a computer to produce sound. A special sound card contain chips that enable a computer to produce sound.

) 11 MIDI MIDI stands for musical instrument digital interface. MIDI stands for musical instrument digital interface. Software and hardware that are designed to MIDI standards are able to send electronic messages to MIDI devices such as keyboard and drum machines. Software and hardware that are designed to MIDI standards are able to send electronic messages to MIDI devices such as keyboard and drum machines.

) 12 Virtual reality Wearing headsets and gloves wired up to a computer and wondered because every thing looks so real and near Wearing headsets and gloves wired up to a computer and wondered because every thing looks so real and near However the costs of producing virtual reality software and hardware are constantly coming down and it is likely that the entertainment industry will soon be producing virtual reality films, videos, and games. However the costs of producing virtual reality software and hardware are constantly coming down and it is likely that the entertainment industry will soon be producing virtual reality films, videos, and games. Uses Uses Military train their soldiers and they feel like a battle. Military train their soldiers and they feel like a battle. Traffic accidents seen by that way Traffic accidents seen by that way