Sony PEG-TG50 - Manual (Page 10)

Performing Arithmetic
powerOne™ Personal 7
Performing Arithmetic
Functions are available either on the screen or from the list displayed
when the “func” button is selected. Select that button to display the
list. Other buttons function as standard calculator buttons.
Input Mode
This calculator can be used in "order of operations" mode or chain
calculation mode.
The input mode affects how calculations containing two variable
functions are evaluated:
Order of Operations Input Mode
This is the input mode used by many scientific calculators. In this
input mode the calculator obeys what is called the "order of
operations" whereby each two variable operation is assigned a priority
as follows (single variable operations are performed immediately):
Order # Function
1 negate (-x)
2 powers and roots
3 multiplication, division and percentages
4 addition and subtraction
To perform a computation, enter alternating values and functions,
ending by tapping equals [=] to calculate. To calculate 27 + 3 x 8.5:
Key Display Comments
C/CE 0 Tap twice to clear the display
27 27
+ 27.00