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Now turn the calculator back on. If it does not function, you might
have taken too long to change the batteries or inadvertently turned
the calculator on while the batteries were out. Remove the batteries
again and lightly press a coin against both battery contacts in the cal-
culator for a few seconds. Put the batteries back in and turn the
calculator on. It should display MEMORY CLERAR.
Managing Calculator Memory
The HP-22S has approximately 371 bytes (units) of calculator mem-
ory available for your use.
The calculator displays MEMORY FULL if you attempt an operation
that uses more calculator memory than is currently available. When-
ever the message is displayed, you must reduce the amount of
occupied memory. You can:
B Clear any variables you no longer need (see page 40).
B Clear any equations you no longer need (see page 74).
B Clear the statistical registers (see page 62).
Memory Requirements
Type of Information
Amount of Memory Used
Variables
8 bytes per non-zero value.
Equations
For each equation: 1 byte + 1 byte for each digit,
variable, operator, or function. (Library equations
do not require memory.)
Statistical data
48 bytes.
Calculations
81/2 bytes per number + /2 byte per operator.
A: Assistance, Batteries, Memory, and Service
145
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