A projector with less than ____ lumens is best used in a dark room.

A key goal of Java is to be able to write programs that will run on a great variety of com- puter systems and computer-control devices. This is sometimes called .

Fill in the blank(s) with the appropriate word(s).

Jin works in the technology department of a large company that is in the process of distributing desktop computers to its employees. Jin is assigning pointing devices to some hardware configurations and has decided to set up a(n) _____ for employees with limited workspaces.

A. optical mouse B. trackball C. wireless mouse D. wheel