computer systems

What is a computer?

A computer is an electronic device which processes data into useful information. A system works to fulfill a set purpose. A computer system is a collection of hardware and software that works together to achieve a data processing task.

Data

Data is input and converted into the computer's internal representation (binary) by the input devices. The data is then processed and the returns are output by an output device. The data may be stored for later use or transmitted to another computer system.

Computer System	Inputs	Outputs	Processing
Calculator	Numbers, operations	Results	Addition, subtraction, multiplying, division ect.
Navigator	GPS location, user inputted addresses	Route, warnings, time taken	Positioning, calculating speed and time, calculating fastest routes
Booking system	Names, location, dates, credit card details	Costs, tickets, maps, travel information	Checking availability, producing document and tickets