Texas Instruments BA II Plus User Manual

10 BA II PLUS™ Calculator
Calculation Method
You can select either the chain calculation method or the
AOS
(algebraic operating system) calculation method. The default
setting for calculation method is chain (
Chn
).
When the calculation method is set to
Chn
(chain), the
calculator solves problems in the order that you enter them.
This calculation method is used in most financial calculators.
For example, in
Chn
when you enter 3
H
2
<
4
N
, the answer is
20 (3 + 2 = 5, 5 * 4 = 20).
When the calculation method is set to
AOS
(the algebraic
operating system), the calculator solves problems according to
the standard rules of algebraic hierarchy. In AOS, multiplication
and division operations are completed before addition and
subtraction operations.
This calculation method is used in most scientific calculators.
For example, in
AOS
when you enter 3
H
2
<
4
N
, the answer
is 11 (2
Q
4 = 8; 3 + 9 = 11). The multiplication operation is
completed before the addition operation.
Procedure: Changing the Calculation Method
쐃
If necessary, press
& | # # # #
.
The most recently selected calculation method is displayed,
either
Chn
(Chain) or
AOS
(Algebraic Operating System).
쐇
Press
& V
repeatedly to select either
Chn
or
AOS
.
쐋
Choose one of the following to continue:
<
To continue setting formats, press
#
or
"
.
<
To return to the standard-calculator mode, press
& U
.
<
To access a worksheet, press the appropriate worksheet
key or key sequence.

Texas Instruments BA II Plus Specifications

General

Type	Financial
Cover	-
Form factor	Pocket
Control type	Buttons
Product color	Black
Digits	10 digits
Display tilting	No
Display number of lines	1 lines
Memory registers	10
Power source	Battery