Texas Instruments BA-20 Profit Manager Quick Reference Guide
BA.20
Profit Manager
Quick Reference Guide
é
English
The BA.20 Profit Manager
Turning the Calculator On and Off ................................ 3
Calculator Display ......................................................... 3
Accuracy and Rounding Information............................. 4
Basic Operations........................................................... 4
Calculations with a Constant......................................... 5
Squares and Square Roots........................................... 6
Percent Calculations ..................................................... 7
Cost, Sell, and Margin................................................... 8
Memory Operations ...................................................... 9
Error Conditions .......................................................... 11
In Case of Difficulty ..................................................... 11
TI Support and Service Information ............................ 12
Service and Warranty Information .............................. 12
2000, 2002 Texas Instruments Incorporated
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2-ENG
Turning the Calculator On and Off
To turn the BA-20 on, expose the solar panel to an
adequate light and press
The BA
20 turns off when the solar panel is no longer
-
exposed to the light.
Protect your BA
sunlight and high temperatures.
J
.
20 from prolonged periods of direct
-
Calculator Display
Memory Indicator
Sign
Minus
Error Indicator
You can enter and display 10-digit numbers (with a
maximum of 9 digits to the right of the decimal).
Apostrophes separate large numbers into hundreds,
thousands, etc. (such as 44’444’444).
M
.
E
Number other than 0 is stored in memory.
Number in the display is negative.
Error condition.
3-ENG
Accuracy and Rounding Information
Calculations are accurate to the tenth digit. When a
calculation result exceeds 9999999999, the first 10 digits
are displayed with a decimal point 10 places to the left of
its true position, and E is displayed. Position the decimal
point correctly by mentally moving it 10 places to the right
and inserting zeros as required.
Calculations with more than 10 digits to the right of the
decimal point are rounded to 10 digits.
Basic Operations
J
R
0
H
G
D
Note:
are entered.
Clears the calculator and the memory.
Press once to correct entry errors. Pressing
R
before @, E, B, or C clears the
display without affecting calculations. Pressing
R
immediately after @, E, B, or C clears
the calculation.
R
Press
memory is not affected.
– 9Enters digits 0 through 9.
Enters a decimal point.
Changes the sign of the displayed number.
Displays the result of a calculation.
The BA
twice to clear the calculator; the
20 completes arithmetic operations as they
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4-ENG
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