In this session we will show some examples of digitisation projects to illustrate what benefits are associated with digitisation. We will discuss what can be a subject of digitisation for small memory institutions like public library or local museum. After this we will describe digital image anatomy. This will include concepts like digital image, file formats and compression types. Moreover we will briefly describe hardware and software which might be used to digitise various kinds of materials (this will be heavily based on current content of the "Digital repositories for small memory institutions" course). Case study showing what formats and software (especially OCR) is used in Poland for processing various types of materials. This session will be summarized with discussion about existing digitisation projects and possible justification for digitisation activities in small memory institutions.