Texas Instruments TI Programmable 57 User Manual

(INV) (2nd) i — THE
“DECREMENT AND SKIP
IF NOT ZERO" KEY SEQUENCE
[INV] — THe “DECcREMENT AND Srp Ir Not Zeno” Key SEQUENCE
This key sequence works in the same fashion as the previous one, except
the condition of the skip is reversed. When the program pointer comes to
an [inv] GM key sequence, here's what happens:
* One is subtracted from the contents of memory zero. (Again, it's
assumed that the number in memory zero is a positive integer.
It it's fractional, it acts as if the next largest
integer is in memory zero. If the number in memory zero is
negative, one is added to it.)
+
The
calculator
then
asks,
is
the
content
of
memory
zero
equal
to
zero?
- If the answer is no, the program pointer skips the instruction
immediately following the [IN] [2nd} MM sequence.
»
If
the
answer
is
yes,
the
program
pointer
proceeds
right
on
to
the
instruction immediately following the [iNv) Gad) Hi.
This instruction is also handy for setting up repetitive calculations in a
variety of programing situations.

Texas Instruments TI Programmable 57 Specifications

General

Brand	Texas Instruments
Model	TI Programmable 57
Category	Calculator
Language	English