1. Input ProcessOutput Data is input.The cpu decides what to do with it is output.

2. Fridge (Hard drive) Ingredients(the code that makes Up a program e.g. Photoshop) The ingredients go on the chopping board (RAM) Unused ingredients go back into the fridge(saved)

3. Rom Store the bios The bios instruct the computer to load the operating system Non volatile

4. Secondary storage Hard disk drives is a data storage device used for storing and retrieving digital information using one or more rigid ("hard") rapidly rotating disks (platters) coated with magnetic material. Solid state drive - a data storage device that uses integrated circuit assemblies as memory to store data persistently. Usb – is a data storage device that includes flash memory with an integrated Universal Serial Bus (USB) interface. USB flash drives are typically removable and rewritable, and physically much smaller than an optical disc.