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PROGRAMMING YOUR WP 34S
Your WP 34S is a keystroke-programmable calculator. If this statement makes you smile
with delight, this section is for you. Else please turn to the HP-42S Owner's Manual first for
an introduction into keystroke-programming for solving repetitive tasks.
The basic building blocks within program memory are routines (also known as programs).
Such routines may contain subroutines, but that is not mandatory. Typically, a routine or
subroutine starts with a LBL statement and ends with RTN or END. In between, you may
store any sequence of instructions (commands, operations, statements) for repeated use.
Choose any operation featured – only a few commands are not programmable.
The statements in your routine may use each and every global register provided – there
are (almost) no limits. You are the sole and undisputed master of the memory!
This freedom, however, has a price: take care that each routine does not interfere with any
other in its quest for data storage space. It is good practice to record the global registers a
particular routine uses, and to document their purposes and contents for later reference.
In programming mode (i.e. while editing routines), the numeric display will indicate the
current program step (000 – 927) in the mantissa and the number of free steps in the
exponent, while the dot matrix will show the command contained in the current step, e.g.:
There is no routine-specific step counting like in the HP-42S.
The commands partic-
ularly required for pro-
gramming are located
within the violet frame
on
this
keyboard
picture. Here you find,
starting top left, com-
mands
for
executing
(XEQ)
or
going
(GTO) a specific pro-
gram, keys for browsing
programs (
and
flag
commands
CF,
and
STATUS),
catalogs of TESTs, pro-
gramming
functions
(P.FCN),
and
functions (X.FCN), com-
mands
for
SoLVing,
integrating,
calculating
products and sums, keys for EXITing programming mode and for pausing program
execution (PSE), some commands for extracting parts (|x|, IP, and FP), keys for
WP 34S Owner's Manual
to
),
(SF,
extra
Edition 3.1
Page 66 of 211
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