Text: Preece, Rogers & Sharp First edition: Ch 1, pp. 20 - 26
Second edition: Ch 3 pp. 29 – 34
Text: Preece, Rogers & Sharp
First edition: Ch 1, pp. 20 - 26
Second edition: Ch 3 pp. 29 – 34
Note the second edition does not discuss the principle of ‘mapping’. Google this if required.