The security of application systems through menu-driven interfaces for the system manager and the user

Software development costs.continue to demand the biggest of the total system cost and this is particularly noticeable at the small end of the market where microprocessor-based systems have considerably reduced the hardware cost element. In itself, there is nothing absolutely wrong or even surprising in the situation where labour intensive programming turns out to be more expensive than any other aspect of the system. But where there is a possibility of reducing any major cost factor in any manufactured item then it will always be sound commercial practice to consider it. [Continues.]