Activant Dimensions Getting Started page 22

Chapter 1. Hardware Training
Concentrator
A concentrator is a complete subsystem with 16 RS-232 asynchronous serial ports
for communication with the host CPU that allows terminals and printers to
function.
CPU
Terminal (CRT)
This peripheral device allows information to be sent to the user from the computer
and to the computer from the user. It looks much like a typewriter with a screen.
It is connected to the CPU through a port.
It is sometimes referred to as a CRT, which stands for cathode ray tube.
Technology changes but human habit is hard to die.
There are many different kinds of terminals. Here are examples of the common
terminals Dimensions uses.
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Dimensions of 16-port concentrator
2.25"high
12.00"wide
7.00"deep
Dimensions of IBM 3153
Screen
14.00" high
12.50" wide
13.00" deep
Dimensions of Wyse 55
Screen
Dimensions of Wyse 150
Screen
12.50" high
12.50" wide
13.50" deep
Keyboard
1.50" high
17.50" wide
6.50" deep
Keyboard
13.25" high 1.50" high
13.00" wide 17.00" wide
12.00" deep 7.75" deep
Keyboard
1.50" high
17.00" wide
7.75" deep
Dimensions 14