Effective use of Teaching Aids

we take in this class teaching learning aids . he show us power point .

this effective use of  teching aids
if you have back up notes in case the silde projector or computer

definition of information system?

Information System is a combination of people, hardware, software, communication devices, network and data resources that processes (can be storing, retrieving, transforming information) data and information for a specific purpose. The operation theory is just similar to any other system, which needs inputs from user (key in instructions and commands, typing, scanning). The inputted data then will be processed (calculating, reporting) using technology devices such as computers, and produce output (printing reports, displaying results) that will be sent to another user or other system via a network and a feedback method that controls the operation. The picture below shows the procedure of Information System when it works

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computer virus

Computer viruses are small software programs that are designed to spread from one computer to another and to interfere with computer operation
Computer viruses are often spread by attachments in email messages or instant messaging messages. That is why it is essential that you never open email attachments unless you know who it's from and you are expecting it.
Viruses can be disguised as attachments of funny images, greeting cards, or audio and video files.

ppt on information system

http://www.arab4load.info/downloadf-InformationSystemsPresentationFinal-ppt.html

World Wide Web

The World Wide Web (abbreviated as WWW or W3,commonly known as the Web), is a system of interlinked hypertext documents accessed via the Internet. With a web browser, one can view web pages that may contain text, images, videos, and other multimedia, and navigate between them via hyperlinks.

image hardware and software

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ttp://www3.0zz0.com/2012/11/14/08/700275944.jpg

RAM vs ROM

Read-only memory or ROM is a form of data storage in computers and other electronic devices that can not be easily altered or reprogrammed. RAM is referred to as volatile memory and is lost when the power is turned off whereas ROM in non-volatile and the contents are retained even after the power is switched off.

Random Access Memory or RAM is a form of data storage that can be accessed randomly at any time, in any order and from any physical location in contrast to other storage devices, such as hard drives, where the physical location of the data determines the time taken to retrieve it. RAM is measured in megabytes and the speed is measured in nanoseconds and RAM chips can read data faster than ROM.