Input and Output
By Eleanor Walter
An input device
An input device sends an instruction to an output device. Input devices are where you have to communicate with other pieces of Hardware and send them an instruction. Input devices need output devices and output devices need input devices. Other examples of Input devices are:
Keyboard- You press the key to tell the computer.
Mouse- You move the mouse to tell the computer to go in that direction.
Camera- You click the button to take a picture.
An output device
An output device receives information given by an input device and follows instructions. If a key was pressed on a keyboard it would be sent to a computer and they computer would follow the instructions given by the input device ( keyboard). Other output devices are:
A fingerprint scanner is Hardware because it is physical and you can touch it. It scans your finger to take a picture, then it send it to the computer system ad into its memory. Fingerprint scanners are an input device as it takes the picture and gives it to the program. They can be used to buy things which helps as you can carry around your finger instead of cash. Only you can use YOUR fingerprint to buy things because every fingerprint is unique..
A computer is an output device because it has received information from the keyboard which is an input device. The input device has told the computer to press 't' so the computer has recognised the signal and pressed 't'.