Computer processing is the explanation of how information gets from the user to the computer. You input information into the computer via the input device (keyboard) the the information is stored in temporary memory. When it leaves the temporary memory, the Processor acts as the Sergeant and passes the instructions to the various parts of the computer. If you are printing the document, the process handles the file, and converts it into printer language and the printer begins to print. Computer processing is based the theory what goes up must come down, only in this case input equals output. .