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Light Pen Interface

Another convenient feature is an interface for a light pen, which

is a device used for tracing a diagram or object and producing the

image on the screen, or for choosing a menu option on the screen.

The QX-10 has space for five peripheral, or option cards. These

are special printed circuit boards that you can install in your QX-10

to add special devices and features. For example, you might want

to install a direct-connect modem card, a joystick, or a hard disk.

Chapter 3 explains the installation of option cards.

If this deluge of information seems a bit too much right now,

don't worry. You'll have time to explore the capabilities and features

of the QX-10 as you use it. The ease of operation and many useful

features of the QX-10 are what make owning and using this finest

of computers a real joy.