Q:Describe the different types of computers. What is the most common type? What are the types of microcomputers?

A:base on Capacity,speed and reliability,they can be divided into three categories of computers:

Microcomputers (personal computers)、Minicomputers (midrange computers)、Mainframe computer、supercomputers.

And microcomputers is the most common type.

There are four types of microcomputers: Desktop computers, Notebook computers, Handheld computers and PDA.