Input, Output and Specialist needs

Input, Output and Specialist needs

Input are used in everyday tasks such as typing a message on a keyboard, you push a button on the keyboard the computer recognizes what button you pressed and transmits it to your computer screen. Without this pretty much all computers would be useless. The Output is basically the part 2 of the input it basically recognizes what you have done and transmits those instructions onto the screen.

Some users of systems may have Specific Needs: For example people who are Quadriplegic they can't press the buttons on a keyboard, fortunately they can use a Eye-Typer which detects eye movement and blinking into input data so that they can use things like a keyboard. There is also a system called a Puff-Suck System which allows the user to blow/suck to operate switches, this is often used in car travel for handicapped people to be able to drive.

Memory

Rom

Short for read-only memory. Computer hardware that stores programs or data that cannot be added to, modified, or deleted. ROM does not require power to maintain its contents, and is often used to save instructions that enable the computer's operating system to communicate with other hardware.

Ram

Short for random access memory.  The main memory of a computer, in which data can be stored or retrieved from all locations at the same (usually very high) speed. More RAM in a computer equals to having more space to put programs on and have multiple running at the same time.