120 Section 8: Programming Basics
Pressing the gu keys is not necessary when we do the calculations manually,
since in Run mode the result of every intermediate calculation is displayed
automatically; but we'll include gu instructions in the program so that the
intermediate results AMOUNT and TAX are automatically displayed when the
program is executed.
Stores tax rate in R
Clears the registers in R
Keys in quantity of item.
Separates quantity of item from
cost of item to be keyed in
Keys in cost of item.