. "Desktop and laptop computers, MP3 players, and personal digital assistants (PDAs) are all examples of PCs, which are also called microcomputers. ??? ??? ??? desktop computer is designed to remain in one location. ??? ??? ??? A laptop computer is designed to be carried from place to place. ??? ??? ??? personal digital assistant (PDA) is a computer that is small enough to hold in one's hand." . . . . .