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Chain Calculations
Chain calculations do a sequence of operations without pressing [=]
after each operation. The HP-22S interprets expressions using the sys-
tem of operator priority described in the next section.
Keys:
Display:
Description:
750 (x] 12 (<]
9,000,0000+
Calculates intermediate
value.
360 (=]
25.0000
Completes the
calculation.
Operator Priority
Some chain calculations might be interpreted several different ways.
For example, 9+12--3 has two interpretations:
12
9+ 12
9+'—3"-
or
3
=7
The HP-22S uses a system of operator priority to evaluate expressions:
(*] (exponentiation)
Highest priority
(=]
Lowest priority
The HP-22S calculates an intermediate result when the next operator
you key in has lower or equal priority. When the next operator has
higher priority, the HP-22S retains the previous number(s). For exam-
ple, the calculation:
9(+]J12(+]3 (=)
is performed as 9 + (12 =+ 3) because division has higher priority
than addition.
2: Arithmetic and Variables
33
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