Apple and Microsoft licensed graphical user interface technology from which company?

What is the term for a machine that contacts a server for information?

Which of the following operating systems is the most expensive?

The other name of knowledge based system is 

_______ is the execution of data in a short time period, providing near-instantaneous output

A symbol that appears on the display screen and that you move to select objects and commands is known as 

A permanent storage device that stores information using electricity, such as a flash drive or memory card.

__________ is a thin plate or board that contains electronic components.

A ____________ is a set of computers connected together for the purpose of sharing resources.

When did the project that grew into Twitter begin?