Final answer:
Legacy systems refer to older computer hardware and software that remain in use within an organization. These systems are important for maintaining continuity in business operations despite their technological obsolescence. Effective human-software interaction is crucial for the efficient management and operation of these systems.
Step-by-step explanation:
The systems that have existed in an organization over a long period of time and were developed using an organization's previous computer hardware and software platforms are commonly known as legacy systems. These systems were created on earlier technologies by companies such as IBM, Digital Equipment Company, and Hewlett Packard, and often included proprietary operating systems like AIX, Xenix, and Solaris. Legacy systems include both hardware and software that, due to their age, may not integrate well with newer systems or technologies. Despite the technological advances, these systems continue to be vital in many organizations because of the significant data and processes they hold. Upgrading or replacing legacy systems can be a complex and expensive process, often involving issues related to data migration, user training, and interruption to business operations.
Human-software interactions become particularly important in managing these legacy systems. Workers need to make effective decisions supported by software that may be outdated yet critical for day-to-day operations. The decision-making processes of workers are often molded around the constraints and requirements of these legacy systems.
As technology progressed, the prevalence of personal computers from manufacturers like Apple and Commodore made computing accessible to a larger audience. The introduction of these PCs and related technologies led to the creation of various communication networks, including electronic bulletin board systems. This marked a transition to the modern era, in which technology is an integral part of daily life and business operations.