ICDL MODULE 1 - Basic Concepts of Information Technology requires the candidate to know about the basic physical make-up of a personal computer and understand some of the basic concepts of Information Technology (IT) such as data storage and memory, the context for computer-based software applications in society, and the uses of information networks within computing. The candidate shall also appreciate how IT systems are found in everyday situations; and how personal computers can affect health. The candidate shall be aware of some of the security and legal issues associated with computers.
Some useful links ...
http://www.howstuffworks.com/computer-memory.htm
Computer Privacy ... http://consulting.hord.com/intprovacy.html
Health and Computers ... http://ergo.human.cornell.edu/ergoguide.html