Calculated Industries 4090 - Manual (Page 32)

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MEMORY OPERATION
Your calculator has two types of Memory operations:
1) A Standard, Cumulative, Semi-permanent Memory μ; and
2) Three Storage Registers [M1], [M2] and [M3], used to per-
manently store single, non-cumulative values.
Memory commands are listed below.
FUNCTION KEYSTROKES
M+:
Add value to M+ μ
Subtract value from M+ Ç μ
Clear M+ (displays and clears M+) ® ®
M+ Swap (swaps current value stored in M+
with displayed value) Ç ®
Recall stored value ® μ
M1/M2/M3:
Store single value in M1 Ç 1
Store single value in M2 Ç 2
Store single value in M3 Ç 3
Clear register M1 0 Ç 1
Clear register M2 0 Ç 2
Clear register M3 0 Ç 3
Recall stored value in M1 ® 1
Recall stored value in M2 ® 2
Recall stored value in M3 ® 3