engineering at both undergraduate and postgraduate level, utility engineers, designers and operators of high

simple rules that designers can use to improve the usability of objects as diverse as cars, computers

: network managers and operators, network designers, consultants, network engineers and technical support

. Programmers and system designers will appreciate its emphasis on the design of interactive systems."--BOOK

design problems, using Smalltalk and C++ in example code. These 23 patterns allow designers to create