PPA5xx/15xx user manual
4-5
4.3 Text entry
There are occasions where it is useful to enter a text
string; for example, a stored program may have some text
as a title.
Numbers and text can be inserted using the number keys
which function similarly to a phone keypad.
The UP and DOWN keys step forward and backwards using
the ASCII character definitions – other printable characters
such as # or ! can be obtained by stepping on from the
space. The available character set is given in the
Appendix.
When entering alphabetic characters, the PROG key
toggles between upper and lower case for the character
preceding the cursor and the next characters to be
entered.
The editing keys, R, L, DELETE and ENTER operate in the
same way as for numeric entry.