Having dealt with what defines the digital character of evidence, Chapter 3 sets out the processes for the understanding of the computer system components and their evidentiary values. Computer components are aids that enable the functionality of the entire life cycle of computing activities. They are characterised by hardware, software and other devices. These components express their values and functionalities in input of data into the computer, process of the input data, storage of the input data and delivery of information by the computing activities.