Introduction



Welcome to Grade 9B3 ITGS classes Here we all are going to calibrate about computer types, computer systems, input/output devices and storage devices And the end of your calibrations add your name in square brackets [Your name]. You can add video, image or/and text (phrase it on your own word and list out your resources) (Copy and Paste is not allowed in my classes and Wikipedia is the weakest resource you can refer to)

Cambridge High School

Difference between Radio waves and microwaves: The frequency spectrum in which they operate. Microwaves are generally in the ultra high and super high and extremely high frequency bands...

Satellite: Are connections that are world wide...there basically connected by satellite in the orbit which is a very fast method of connectivity...


 * [Omar Khammash]..:D Oh baby! **

[] This is awesome!!
 * [Omar Khammash] **

radio wave: is an electromagnetic wave of radio frequency microwave: is a wavelength between that of infrared and short wavessatelite: is a celestial body that orbits a planetthe difference between them is the types of waves usedand the wavelengths, another difference is the frequencies. [Abdullah Ghali]

An amazing video about the topologies: [] [Abdullah ghali]

media type="youtube" key="WLpqfMO9r5w?fs=1" height="405" width="500" align="center"

[Hussein Alaa Al-Mahdawi] (this link refer to Google! nothing in there refer to input or output devices!)

**__ Input Devices __** Here is a summary I made for some of the input devices were taking. **__ Input Devices: __** **// Keyboard //** : is an input device, which uses an arrangement of keys, to input data or information into the computer. **// Mouse //** : is a pointing device that functions by detecting motion and is used to point, click, and select items on the screen. **// Touchpad //** : a device which senses the placement of a user’s finger and can be used to execute commands or access files. **// Tr //****// acker ball: //** A tracker ball is a pointing device, and it’s used as an alternative for the mouse. **// Remote Control: //** a handheld device used to control a device, system, or activity from a distance. **// Joystick //** : a rod-like device often used by people who play computer games. **// Touch Screen: //** is an input device that can detect the presence and location of a touch within the display area. **// Magnetic Stripe Reader // : a ** magnetic stripe reader is a device that reads the information encoded in the magnetic stripe located on the back of a plastic badge. **// Smart card reader: //** A smart card reader is a device which is able to read data from different kinds of storages like SD cards, mini-SD cards, and USB. **// Scanner //** : a device which converts images such as photographs into digital images that the computer can manipulate. **// Barcode Reader // : ** A barcode reader is an electronic device for reading printed barcodes using a light beam. **// Optical Mark Reader //** : is an input device that can capture human-marked data from document forms such as surveys, tests, and lottery tickets. **// Optical Character Recognition //** : is the electronic translation of scanned images of handwritten, typewritten or printed text into machine-encoded text. **// Magnetic Ink Character Recognition //** : is a character recognition technology basically used by the banking industry to make the processing of cheques easier. **// Digital Camera //** : an input device that takes photographs or images and stores them on a memory card instead of using a film. **// Microphone //** : a device used to input sounds such as the human voice which can activate computer commands with voice recognition software. **// Sensors // : ** A sensor is a device that measures a physical quantity such as light, temperature and pressure and converts it into a signal which can be read by an observer or by an instrument. **// Graphics Tablet //** : a device which allows users to interact with their screens using a pen-like device. [Tala Aldwik]

my presentation! [ Omar Odeh]