Inputs
Inputs allow computers to receive data from the physical world.
Sensors allow the computer to take automatic readings like temperature.
Other input devices allow us as humans to enter instructions or data.
Peripherals
The slideshow below gives details of a number of input devices that can be connected to a General Purpose Computer
Sensors
Sensors are normally connected to Embedded Computer systems to measure the physical world around us.
Sensors produce an analogue signal that needs to be converted to a digital signal (using an Analogue to Digital Convertor).
Sensors are used in control systems like burglar alarms.
Sensors may also be connected to General Purpose Computers.
Scientists might connect them to their computer to take measurements while doing an experiment. This is called Data Logging.
Keywords
Analogue Signal
A continuous range of values that vary over time. It represents data in a wave form.
Digital Signal
A stream of separate values used to represent data.
Data Logging
The collecting of data (usually from sensors) over a period of time.
Input Device
A device used to input data into a computer.
Peripheral
An input or output device that can be connected to a computer.