1:
Getting
Started
27
Calculations Using Menus
Using menus to do calculations is easy. You don’t have to remember in
what order to enter numbers and in what order results come back.
Instead, the menus guide you, as in the previous example. All the keys
you need are together in the top row. The menu keys both store numbers
for the calculations and start the calculations.
The MU%C menu can calculate
M%C
, the percent markup on cost,
given
COST
and
PRICE
.
COST
PRICE
M%C
Calculator
Memory
Store 4.60
Store 4.10
Calculate 12.20
Keys: 4.60
Display:
Keys: 4.10
Display:
Keys:
Display:
Then the same menu can calculate
PRICE
given
COST
and
M%C
.
COST
PRICE
M%C
Calculator
Memory
Store 20.00
Store 4.10
Calculate 4.92
Keys: 20
Display:
Keys: 4.10
Display:
Keys:
Display:
Notice that the two calculations use the same three variables; each
variable can be used both to store and calculate values. These are
called
built-in variables
, because they are permanently built into the
calculator.
