Computer Terminals come in all flavors of Clearance. They typically consist of a security camera, a monitor, and a keyboard. These nodes let you link into Friend Computer and access the many databases, C-Mail, the Complex Wide Web, and many other resources.
Highest clearance citizens have Terminals in their offices, and others may have 'dumb' Terminals which perform only a few simple functions. There are also many public access terminals, some of which actually work.