HP HP-21 - Index

INDEX
A
Accessories, 53
Accuracy, internal, 17,20
AC line operation, 54
Advantages, 15-16
Antilogarithm
common, 49
natural, 48
Arc cosine, 43
Arc sine, 43
Arc tangent, 43
Arithmetic, 10-11, 29
chain, 31
constant, 36
storage register, 42
Automatic display switching, 20
Automatic storage, 12-14, 25
Automatic stack drop, 31
Automatic stack lift, 31, 32, 41
B
Battery
charging, 7, 53, 54, 55
replacement, 55
operation, 55
defective, 56
Battery charger, 53-54
use, 54
Blank display, 56
Blue shift key, 9
cancel, 38
C
Calculation, overextended, 24
Chain arithmetic, 31
Chain calculations, 12
Change sign, 8, 22
Changes, obligation to make, 57
Charger, battery, 53-54
61