Parentheses Calculations; Percentage Calculation; Continuous Calculation Function - Citizen SRP-280 Instruction Manual

• Number display formats are selected by pressing [ 2nd ] [ SCI/ENG ] to
display the menu. The items on the menu are FLO (for floating point), SCI
( for scientific), and ENG (for engineering). Press [ ] or [ ] until the
desired formats is underlined, and then press [ ENTER ]. See Example 12.
(Note) : The engineering format is similar to the scientific format, except
the mantissa can have up to three digits left of the decimal, instead
of only one, and the exponent is always a multiple of three. It is useful
for engineers to convert units based on multiples of 10
• You can enter a number in mantissa and exponent form by [ EXP ] key. See
Example 13.
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Parentheses calculations

• Operation inside parentheses are always executed first. SRP-280 can
use up to 14 levels of consecutive parentheses in a single calculation.
SRP-285 can use up to 22 consecutive levels of parentheses in a single
calculation. See Example 14.
• Closed parentheses occurring immediately before operation of the
[ ENTER ] key may be omitted, no matter how many are required. See
Example 15.
• A multiplication sign " x " occurring immediately before an open parenthe-
sis can omitted. See Example 16.
(Note) : The calculator can auto-correct abbreviated multiplication in front
of all functions, except memory variables, left parenthesis, type B
functions.
• Henceforth, abbreviated type will not be used in this manual. See Example
17.
• The correct result cannot be derived by entering [ ( ] 2 [ + ] 3 [ ) ]
[ EXP ] 2. Be sure to enter [ x ] 1 between the [ ) ] and [ EXP ] in the below
example. See Example 18.
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Percentage calculation

• [ 2nd ] [ % ] divides the number in the display by 100. You can use this key
sequence to calculate percentages, add-ons, discounts, and percentages
ratios. See Example 19.
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Continuous calculation function

• The calculator enables you to repeat the last operation executed by
pressing [ = ] key for further calculation. See Example 20.
• Even if calculations are concluded with the [ = ] key, the result obtained can
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