The correct answer is: A. June, 1989
IBM closed its last punched card manufacturing plant in June 1989. The plant was located in Endicott, New York, and had been in operation since 1924. The closure of the plant marked the end of an era for IBM, as punched cards had been a mainstay of the company’s business for decades.
Punched cards were first developed in the 1800s, and they were widely used in business and government for many years. They were a convenient way to store and process data, and they were relatively inexpensive. However, punched cards were also slow and cumbersome, and they were eventually replaced by newer technologies such as magnetic tape and disk storage.
IBM began to phase out punched cards in the 1970s, and the company’s last punched card manufacturing plant closed in 1989. The closure of the plant marked the end of an era for IBM, but it also signaled the beginning of a new era for the company, as it focused on newer technologies such as personal computers and mainframe computers.
The other options are incorrect because they are not the dates on which IBM closed its last punched card manufacturing plant.