Epson HX-20 Manual De Usuario

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That’s the same pattern of numbers you’ll find on the keyboard of
any calculator or adding machine.
When the HX-20 is in numeric mode, you cannot type any let-
ters. (Go ahead. Press the 
 
key. See? Nothing happens. In this
mode, all letter keys are disabled.)
The number keys in the top row of the keyboard will also work-
although presumably you put the HX-20 into numeric mode
because you’d rather not use those keys. However, the numeric keys
will not function if pressed in conjunction with 
The following keys work normally when the HX-20 is in numeric
mode:
If you don’t press a 
 key, the following keys will generate the
indicated characters when the HX-20 is in numeric mode:
 
 
 
 
 
Press
To Create
This
This
KEY
CHARACTER
Description
?
Minus sign
Plus sign
Asterisk
Comma
Period
Slash
Question Mark
The above keys will not function if used in conjunction with a
SHIFT key.
When you want to take the HX-20 out of numeric mode, just
press the 
 
key or the 
 key. If you press the 
 
key, you will
put the HX-20 into  upper case  mode. But if you end numeric mode
by pressing 
 
, you’ll put the HX-20 into  lower case mode. Figure
5-1 summarizes the ways in which you may change screen editor
modes.
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