DECstation 5000/260, Руководство оператора, Страница: 16 / 215

The Main Components and How to Install Them
1.1 The System Unit
1.1 The System Unit
The system unit is the central component of your workstation. It contains
the memory, central processing unit (CPU), power supply, and connectors by
which you attach the monitor, keyboard and mouse, and all other parts of your
workstation.
The system unit has a built-in small computer systems interface (SCSI)
connector to which you can attach multiple external storage devices (tape, disk,
and compact disc drives). It also has a built-in ThickWire Ethernet connector
to connect your workstation to an Ethernet network. You can connect
terminals, printers, plotters, or modems to its two synchronous/asynchronous
RS232 serial communications connectors.
There are three TURBOchannel option slots on the system unit in which you
can install TURBOchannel option modules. TURBOchannel option modules
provide the hardware needed to connect and operate various workstation
additions and options. The basic workstation comes with a graphics option
module to which you attach the workstation monitor. The graphics option
module can be installed in one of the TURBOchannel option slots on the
system unit or in a TURBOchannel extender unit connected to the system unit.
The following sections describe the front and back of the system unit and how
to install it.
For information about replaceable modules inside the system unit, refer to
Chapter 8.
1–2 The Main Components and How to Install Them