HP 12C Platinum Operating Instructions page 4

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HP 12C Platinum Operating modes and clearing procedures
Note that if
being performed and pressing t will not stop it.
Memory Organization
In the HP12C Platinum, memory is organized as a set of registers that can hold a valid number representation. There
are a total of 20 data registers, R
available to the user for holding program instructions. If programs are entered that are larger than this, registers are
converted as needed into 8 program lines each, beginning with R.
400 program lines.
Registers R to R and R.
0 9
or by some internal functions. The shaded area represents the registers that can be automatically converted into
program steps. Although registers R
statistical functions. Financial registers n, ¼, $, P and M are used by TVM, Bond, Depreciation and Cash-
Flow functions, but can also be used to hold any valid number.
T
Z
Y
X
L
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is flashing in the display and the
to R and R. to R.
0 9 0
to R. are "general purpose" registers, and they can be accessed either directly by the user
0 9
to R are general purpose registers as any other, their contents are used by
1 6
n i
Stack
(n)
(Σx)
Σ
(Σx
(Σy)
(Σy
(Σxy) R
These program steps are also
available, as you key them in
Permanently available
program steps
annunciator is not shown, then an internal function is
PRGM
, that are available for use. There are 309 program lines
9
and working down through R
9
PV PMT
Registers Cash flow
R CF
0
R CF
1
CF
R
2
CF
) R
2
3
CF
R
4
CF
) R
2
5
CF
6
R CF
7
R CF
8
... ...
R. CF
8
R. CF
9
--- CF
... ...
--- CF
--- CF
...
- 4 - HP 12C Platinum Operating modes and clearing procedures - Version 1.0
, for a maximum of
7
FV
N
j
N
0 0
N
1 1
N
2 2
N
3 3
N
4 4
N
5 5
N
6 6
N
7 7
N
8 8
...
N
18 18
N
19 19
N
20 20
...
N
28 28
N
29 29
N
30
Figure 8