HP·38E/38C - Slide Rule Museum

112 Decisions
To input the numbers using a program, we will want to use a fl ag of some
sort to tell the calculator that we have finished entering the series of
numbers. Since x = Q is a conditional on the HP-38E , let' s use zero as
a flag. This means that when the calculator reads a zero entry, it will
branch to the second part of the program.
The fl owchart for the fi rst half of the program looks like thi s:
Begin
calculating
% totals.
Initialize:
Set @QJ to O.
Set 0 to O.
Key in
next number.
No
Store number
with @J.
Add 1 t0 0 .
Add number
to total.