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9
METAMORPHOSIS
The 1155 is a calculator. However, it is a calculator capable of "remembering"
a program and running it automatically.
• A program is a sequence of instructions.
•
Each instruction is equivalent to one or more key strokes.
•
The 1155 can "remember" a program equivalent to up to 511
keystrokes.
Start with a problem.
PROBLEM:
Given r, compute A
=
1Tr2
Proceed as follows.
ONE:
Write a program.
TWO:
Store the program in the 1155.
THREE:
List the program and proofread it.
FOUR:
Run the program. Given a value of r, the 1155 computes and
prints the corresponding value of A
=
1Tr2.
Repeat for each
value of r.
Now, locate the following keys on the right side of the keyboard.
loNE[
[INSERT
I
[DELETE [
~
9-1
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