Calculated Industries 4020 Pocket Reference Manual page 23

Memory is semi-permanent, clearing only
when you:
1) turn off the calculator;
2) press ® ®;
3) press Ç ®;
4) press Ç x (Clear All) .
When Memory is recalled (® µ),
consecutive presses of µ will display
the calculated average and total count of
the accumulated values.
Example:
KEYSTROKE
3 5 5 µ
2 5 5 µ
7 4 5 Ç µ (M-)
® µ
µ
µ
® ®
P R
OCKET EFERENCE
TTL
STORED
G
UIDE
DISPLAY
M+ 355.
M+ 255.
M- 745.
– 135.
AVG – 45.
CNT 3.
M+ – 135.
— 19
M
M
M
M
M
M