HP -11C Owner's Handbook Manual page 21

38 Section 2: Memory Stack, LAST X, and Oata Storage
Recalling Numbers
If... .- and you press
(RCL)2, then...
Data Data
Stack Storage Stack Storage
1—> lost
To{ 1] [oe]
z>{2]| Co]
yes] Le]
xe[a] eC
To/ 2 |
z>[3 |
Yo! 4 |
Xo/ 9 |
Storage and Recall Exercises
Execute the following operations:
Keystrokes Display
123 123
(sto]4 123.0000 Stores 123 in Ry,
678 678
STO)E)7 678.0000 Stores 678 in R.>.
(RCL)4
123.0000 Recalls 123 from Ry.
RCL) J7 678.0000 Recalls 678 from R 7.
Clearing Data Storage Registers
CLEAR (clear registers). Clears the contents of all data
storage registers to zero. CLEAR does not affect the stack or
~~~ we
we wY
Section 2: Memory Stack, LAST X, and Data Storage 39
LAST X registers. (To clear a single data storage register, store zero
in that register.)
Storage Register Arithmetic
, 6) ©) n (storage register arithmetic). Uses the
number in the displayed X-register to perform arithmetic upon the
contents of a specified storage register n. The key sequence is [STO
followed by an arithmetic function key, followed in turn by the
register address (0 through 9).* The result of any storage register
arithmetic operation is placed in the specified data storage register.
Storage
Registers
If.. Ta | and...
represent the current status of the memories, executing [STO] [x] 1
results in:
Thesame numbers Contents of R, changed
in the stack from k to(k Xd).
registers.
"Storage register arithmetic can be performed in Ro through R.g using indirect
addressing, which is covered in section 9, The Index Register. Storage register
arithmetic cannot be performed in Ry.