Casio FX-180PA Manual page 37

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•After the program is started, instruction steps are executed one after another and exe-
cution does not stop. But it is needed to halt execution for inputting a data or reading
a result. This is accomplished by !J and ®®.
When the end of a program is reached, execution stops automatically and the state is
displayed. So, HLT may be absent.
•Each function comprises a step of program. The depression of keys in a certain sequence
produces a single program step if it generates a single function.
1) Functions generated by the depression of a single key
Ex.) Numeral value, +/—, +, —, x, +
((,)),
sin, log, ENT
2) Functions generated by the depression of a two-key sequence
Ex.) SHIFT sin ', SHIFT X.-.Y, SHIFT x'N, SHIFT R —P, Kout 2, Kin 3, SHIFT
RAN #
3) Functions generated by the depression of a three-key sequence
Ex.) SHIFT X.-'K 5, MODE 83 (Assignment for the number of significant digits)
If you have misoperated when writing a program (i.e. in the LRN mode), press the se
quence of ® f and perform the correct operation.
The depression of a data entry key (Q, Qo — QQ ) followed by ur , 0,
or will not
be written in if such a sequence immediately follows the depression of ®. Note that
one of the functions which does not follow a numeric data will be written in as a step.
Ex.)
6 6 6 =
1
Not written in
r~t 6 = = =
Not written in Written (2 steps)
■ How to erase a program
An old program will be automatically overwritten by a new program if the same program
number is assigned to them.
To erase a program for making corrections or erase all 38 steps, operate the following
sequence.
•To erase a single program (P1 or P2).
®®
P1 (or P2 ) ®
®
1
Selects the LAN mode.
•To erase both P1 and P2.
■ Jump instructions
There are two types of jump instructions as follows.
1. Unconditional return to the first step of program: RTN
Write the sequence of ®® at the end of a program to execute it repeatedly.
Ex.) Let us use the unconditional return instruction in the regular octahedron program
explained on page 32. (In this case, the formula must be modified to S=a 2 x2f3.)
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