You should be able to put the following list in order
from least to most powerful:

Mainframe Host computer
P.D.A. (Personal Digital Assistant)
Web Server
Unix Workstation (SGI or SUN Workstation)
Microcomputer
Minicomputer
Supercomputer
Laptop
Notebook
Tower PC
Desktop PC
Palm-top
File Server
Network computer
Dumb Terminal

Check the text book: Discovering Computers 2003 pages 1.19-1.28