There are environmental uses of event-driven programs for non-graphical applications. An example could be air conditioning systems. These are suitable for event-based programs because you will want to turn on the air conditioning if it is too hot or turn it off when it is too cold. When you press the button, it will activate a heater located inside and turn off when it reaches the temperature indicated on the dial. This is event driven because when you select the temperature on the dial and press the button, the air will allow the flow. Say no to plagiarism. Get a tailor-made essay on "Why Violent Video Games Shouldn't Be Banned"? Get an original essay Most computers use event-driven programs for non-graphical applications. A good example would be when it turns on. The monitor doesn't even need to be turned on for events to occur. When you press the button, one or two lights will turn on. The reason it does this is that it shows the user that power is going through the power supply and into the rest of the computer's components. Also during this step you will be able to feel the current coming through because you should be able to hear the fan start to spin. Another good example of this would be opening your CD or DVD drive. This is a non-graphical application because you don't actually see anything happening on the screen. There are actually many events that occur while opening the disk drive. The first is when you press the button, if you have media in the drive that holds a disc, the disc will probably slow down to about 25% speed. The reason it does this is because it will spin at an incredible speed because the laser has to read it and if you try to touch it at the speed it spins at, you will most likely cut your hand. The next event in this process is the light appearing just to the side of the disk drive or just below it. You will notice that the light will begin to flash when you press the button. This happens when you open the disk drive because it will alert you if the disk drive is opening. You can then insert the disc and close the tray again. The next event that occurs is the fact that the fan inside the computer will start spinning at an even higher speed. You don't necessarily see it but you will feel it. The reason this happens is because the laser used to read the disc will get very hot and the fan was just keeping everything else cool, so it will have to go even faster if the laser is also in use. Another example would be in MS-DOS operating systems. Does not use wimp when interacting with the user. The user uses/enters commands into the computer to provide instructions such as saving files or opening new documents in addition to using the mouse to perform this action. A keyboard is used to enter this command and when this happens "key pressed" events occur. Please note: this is just an example. Get a custom paper from our expert writers now. Get a Custom Essay There are a large number of mobile devices that can range from cell phones to tablets to laptops. Mobile phones use non-graphical applications. Most phones now are touch screens and tend to have widgets on the home screen to access things, so I'll have to talk about older phones. When you navigate the menus on an older Nokia you have to press the main button on the keyboard which will take you to the menu. You will then have to press the keyboard in particular directions to reach the icon and then press the menu button again to access the separate menus. You will then need to type the text and select.