16pp stapled booklet in stiff card covers. Numerous colour illustrations in text. 4to. Covers have a little shelf wear, lightly rubbed at edges. Internally neat, clean, bright and tight. Adapted from the 1983 lecture by Drs Mervyn Jones and Chris Todd of the British Telecom Research Laboratories; a fascinating snapshot insight into the state of technology development in the mid 1980s, reactions to the development of the microchip over the previous 10 years or so; and looking forward to a perceived future digital world.