External Device Ports

There are three external device ports on the back of the main unit: a light pen port, a Centronics-compatible parallel port (la- belled PRINTER), and an RS-232C serial port. The RS-232C port may also be used for a printer, but because it relays data at a slower rate than the parallel connection, it is generally not the preferred choice for printing.

LIGHT PEN

PRINTER

 

R

S - 2 3 2 C

 

PORT

PORT

 

 

 

PORT

 

Checking the Cable

AU ports on the back of the main unit are female; you’ll be plugging the male end of the external device’s connecting cable into the main unit. Here are some examples of how the male ends of the cables look for each type:

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