计算机系统的发展趋势 USTC Mainframe (one computer,many people) PC (one person,one computer) Ubiquitous Computing (one person,many computers) Mainframe Comp Personal Comp Ubigultous Comp ·Humans share a 。P8r500a ·Ubiquitous rare resourca ◆)rect usa08 ·Implicit usage ·Usage explict.tuse ·User Everybody well prepared supported by experts ·User:Experts llxx@ustc.edu.cn 11/87计算机系统的发展趋势 llxx@ustc.edu.cn 11/87