Nortel Networks VT100 - Manual (Page 9)

1-2 About the VT100 Gateway
555-9001-316 Standard 1.0 February 1996
Figure 1-1
Terminals connected to a host computer
The VT100 terminal uses an asynchronous communication protocol to
transmit characters to and from a host computer. The VT100 Gateway
communicates with a host through a serial port and a modem, or through a
serial port and a direct connection. With respect to the VT100 Gateway
product, a host computer is any computer that can accept a VT100 terminal
connection, including mainframes, minicomputers, and workstations.
The standard VT100 terminal has a 24x80 character display, and can be
accessed non-sequentially . This means the terminal can access text anywhere
on the screen. This allows you to delete and insert text, scroll the page, and
move the cursor to any position on the screen. Your ability to access the
VT100 screen non-sequentially depends on the host application you are
using.
Figure 1-2 shows a sample VT100 terminal running a sample host
application. This sample accounting application is used throughout the guide
to illustrate how to develop applications using the VT100 Gateway.
Note: The screens shown in this guide are examples only and are not part of
any real application.
VT100 Terminals Host