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Chapter
5
PERIPHERALS
Peripheral devices, or peripherals, are simply pieces of equipment that are attached to a
computer to allow it to perform some specific function. Examples of peripherals are in-
formation storage devices, printers, heat sensors, and TV cameras.
In
order to make the CBM computer as flexible and versatile as possible, it has been de-
signed to connect to many different types of peripherals. Different peripherals require dif-
ferent types of connectors and electrical signals to make them work correctly. A kind of
electrical bridge must be provided between the computer and its peripherals. This bridge is
called an "interface". Your CBM has four types of interfaces:
• IEEE-488 Interface
• Parallel User Port
• Tape Cassette Interface
• Memory Expansion Port
IEEE-488 INTERFACE
The computer can be connected to IEEE-488 devices through the IEEE-488 interface. This
interface is located on the back of the computer. See Figures 6 and 7. IEEE·488
is
the
designation given to a particular interface method by the Institute of Electronic and Electri·
cal Engineers (IEEE).
All interface cables connect to the main logic printed circuit board located inside the com-
puter housing. Openings in the rear and righthand side panels of the computer housing
expose the press fit connection points. See Figure 6.
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