ABSTRACT
This chapter discusses the short introduction on how human-machine interfaces have evolved: from analogue instruments local to the plant equipment to centralized computer-based control systems enabling control of complex operations. At the end of this chapter, a few suggestions on good practices related to HMI design and how to deliver a good Return On Investment from an HMI upgrade are provided. The lack of philosophy and style guides allowed individuals to do what they thought was right, rather than following a consistent design; the inconsistent placement of objects and links prevents humans from using pattern recognition skills. The task analysis provides insight into rationalizing the required data and information, offering a dramatic reduction in the total number of displays. Having an overview is an essential practice, one that was lost in the early days of the introduction of computer technology.
