HP
Character Set
Because the HP calculators have many special characters thta are not easily
shown on the personal computer (PC), a number of tricks have been
developed to represent the special calculator characters. These tricks
include:
Digraphs
A DiGraph is a way of expressing special characters used on the
calculator in the limited PC character set. DiGraphs are often used to
represent calculator characters for User RPL on the PC. Because the HP
RPLCOMP compiler does not support DiGraphs they cannot be used with Debug4x.
Escape Sequences
An Escape Sequence is a backslash followed by three hex digits.
The hex digits give the character code for a special character on the
calculator. For example the program start delimiter << is represented by
the escape sequence \AB. The HP RPLCOMP compiler and Linker will allow
use of the escape sequence anywhere. To generate or refer to an external
name that will appear as NAME<<, code NAME\AB.
A table of Escape Sequences appears below.
List of Escape Sequences
Type a backslash (\) followed by the two digit hex numbers below to
represent the special calculator characters.
Hex |
DiGraph |
Description |
1F |
\1F |
|
5C |
\\ |
backslash |
80 |
\<) |
angle symbol |
81 |
\x- |
x with a bar |
82 |
\.V |
nabla operator |
83 |
\v/ |
square root |
84 |
\.S |
integral symbol |
85 |
\GS |
Sigma |
86 |
\|> |
Bold triangle right |
87 |
\pi |
pi |
88 |
\.d |
derivative symbol |
89 |
\<= |
less or equal |
8A |
\>= |
greater or equal |
8B |
\=/ |
unequal |
8C |
\Ga |
alpha |
8D |
\-> |
right arrow |
8E |
\<- |
left arrow |
8F |
\|v |
down arrow |
90 |
\|^ |
up arrow |
91 |
\Gg |
gamma |
92 |
\Gd |
delta |
93 |
\Ge |
epsilon |
94 |
\Gn |
eta |
95 |
\Gh |
theta |
96 |
\Gl |
lamda |
97 |
\Gr |
rho |
98 |
\Gs |
sigma |
99 |
\Gt |
tau |
9A |
\Gw |
omega |
9B |
\GD |
delta |
9C |
\PI |
capital pi |
9D |
\GW |
omega |
9E |
\[] |
block cursor |
9F |
\oo |
infinity |
A4 |
\oX |
BINT symbol (non-standard) |
AB |
\<< |
program delimiters |
B0 |
\^o |
degree |
BB |
\>> |
|
D7 |
\.x |
multiplication |
D8 |
\0/ |
empty set |
DF |
\Gb |
beta |
F7 |
\:- |
divide |