the four parts include data input, data storage, data processing and data out put. data input is the first process and it involves entering information in the suitable data fields of database, using various data input devices such as keyboard, speech recognition software and mouse among others.data storage is storing important information in various storage devices such as RAM hard disk among others. data processing involves converting raw data to machine readable form. data output is a process of accessing the processed information. this information is usually displayed on the monitor