Radio Shack TRS-80 DT-1 User Manual

DT-I Owner's Manual
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Introduction
What is a data terminal?
Terminus: Lat. Boundary or End.
A
data terminal is the connection hetween you and a
computer. It is not a corrputer. It is a connection to a
computer
and transfers information fran hurran form (e. 9•,
letters, nU1lt>ers, etc.) to a forrrat corrputers understand
(e.g., electrical pulses).
There are three Parts to a Terminal:
The Keyboard, where you enter data.
The Video SCreen, where the Computer outputs data in
visible form.
The
Input/Output Channels, where the Terminal
communicates wi th the Computer.
Vhen you connect a Data Terminal to a power source and turn
the switch ON, nothing really happens unless the Terminal is
connected to a "Host" corrputer. A Host is the controlling
computer in a rnultiple-computer system. Consequently, the
cperation and caPabilities of your Data Terminal are limited
onl y by the li mi tations of the Host corrputer -- your
Terminal can only do what the Host can do and no rrore!
For instance, your Data Terminal cannot store programs or
data itself, but it can access inforrration stored by the
Host System.
tbte that different Host Systems operate in different ways.
In fact, they may even recognize different keyboards. If you
press a key on the Terminal when it is connected to one
Host, the reaction rray he totally different than when you
press the sarre Terminal key when it is connected to a
different Host!
In other words, the specifie q;>eration of your Data
Terminal depems upon the Host that is in control.
Consequently, good Data TerminaIs (like the DT-I) must he
designed to oPerate with a variety of different Hosts.
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Radio Shack TRS-80 DT-1 Specifications

General

Brand	Radio Shack
Model	TRS-80 DT-1
Category	Desktop
Language	English