Collection of Data -- capturing data from their sources and recording it onto some media (e.g., paper).
Preparation of Data -- copying, grouping, or arranging data in a more convenient way for input.
Checking and verifying the data collected are often done at this stage.
Input of Data -- entering the data or sending the stored data into the processing system.
Checking the accuracy and validity of the input data are often done at this stage.
Processing of Data -- calculating or manipulating the input data and even storing the results for future use.
Output of Information -- giving out the processed results in a readable form (e.g., a report).