HP HP-20S - Exchanging Two Numbers (SWAP)

Exchanging Two Numbers (SWAP)
(=) (swar]
(=]
8(+]4(=])5
(=) (swaP]
(=)
Pressing (%) exchanges the last two numbers that
you entered during a calculation. For example, if you
have entered 44 (+] 75, (%) reverses the order of
the numbers to 75 [+] 44.
Display:
75_
44.0000
1.7045
5_
4.0000
9.2500
Description:
Oops; you meant to
enter 75 + 44.
Swaps the 75 and 44.
Completes the
calculation.
Stop! You really
wanted to add 8 + 5
+ 4.
Swaps the 5 and 4.
Completes the
calculation.
When a function returns two results, the : annunciator comes on.
Pressing (€] exchanges the two results. For example, to convert
the rectangular coordinates (10,—15) to polar coordinates:
Keys: Display:
(]
10 10.0000
15 (@) —56.3099
26 2: Ari
thmetic and Storage Registers
Description:
Sets Degrees mode.
Stores x.
Displays the angle. :
indicates another result
was calculated.