HP 12C Platinum Operating Instructions page 5

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HP 12C Platinum Operating modes and clearing procedures
How to selectively clear memory contents
The "master clear" of the HP12C Platinum is accomplished when the following sequence is executed:
• with the calculator off, press and hold -;
turn the calculator on;
•
release -.
•
If the operation is successful, the display shows:
The HP12C Platinum memory contents now match the ones shown in Figure 8.
It is possible to clear specific parts of the HP12C Platinum memory with the use of the clearing functions under
on the keyboard. The different functions included are:
clears the contents of registers R
f²
other register contents. This allows new statistic summations to be collected.
If the calculator is in program mode (
fÎ
g(000 (Step 008 would appear as
data storage, if any. If the calculator is in normal (run) mode, fÎ only positions the program memory to
step # 000.
clears the five financial registers n, ¼, $, P and M to zero.
fG
clears all registers containing valid numbers to their default contents, as shown in Figure 8. fH does
fH
not clear any program instruction, even if they are stored in registers converted to program steps.
fX clears f annunciator and any partial keystroke sequence (:, ?, ?+, g(, :g, etc)
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to R and the stack registers X, Y, Z and T to 0.00 without changing any
1 6
annunciator on), fÎ clears the first eight program steps to
PRGM
- 5 - HP 12C Platinum Operating modes and clearing procedures - Version 1.0
Figure 9
and frees all registers used by programs for
)
,
-CLEAR-