The Series 3100/3500 Keyboard; Using The Keyboard - Symbol Series 3100 Product Reference Manual

Operating the Series 3100/3500

The Series 3100/3500 Keyboard

The keyboard is used for entering data and issuing commands to the terminal. Figure
4-1 illustrates the standard 35-key keyboard, while Figure 4-2 presents the standard
PDT 3500 47-key keyboard. For the other Series 31XX/35XX keyboards, refer to
Appendix B.
The keys on the keyboard are distinguished as modifier keys and character keys.
Because terminal keyboards have fewer keys than PC keyboards, each character key
can produce more than the usual one or two characters. The four modifier keys, Shift,
Alpha, Ctrl, and Func, used individually or in combination, determine which
character or special function the character keys produce.

Using the Keyboard

Except for during boot operations, the terminal expects the operator to press keys one
at a time. If ERR3000 is loaded, and if two or more keys are pressed simultaneously, the
system indicates a Double Key error.
The keyboard also has an optionally configurable auto-repeat function. If the
application allows, a character repeats as long as the key is held down. If the key is
pressed immediately following a modifier key, the modifier sequence affects only the
first occurrence of the character key.
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