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The "clear" keys, The “clear” keys – HP 15c User Manual

Page 20

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20

Section 1: Getting Started

Keystrokes

Display

6.6262

6.6262

6.6262 00

The 00 prompts you to

key in the exponent.

3

6.6262 03

(6.6262Ч10

3

).

4

6.6262 34

(6.6262Ч10

34

).

6.6262 -34

(6.6262Ч10

-34

).

v

6.6262 -34

Enters number.

50

*

3.3131 -32

Joule-seconds.

Note: Decimal digits from the mantissa that spill into the exponent
field will disappear from the display when you press ―, but will be
retained internally.

To prevent a misleading display pattern, ‛ will not operate with a
number having more than seven digits to the left of the radix mark (decimal
point), nor with a mantissa smaller than 0.000001. To key in such a number,
use a form having a greater exponent value (whether positive or negative).
For example, 123456789.8×10

23

can be keyed in as 1234567.898Ч10

25

;

0.00000025Ч10

-15

can be keyed in as 2.5×10

-22

.

The “CLEAR” Keys

Clearing means to replace a number with zero. The clearing operations in
the HP-15C are (the table is continued on the next page):

Clearing Sequence

Effect

|`

Clears display (X-register).

In Run mode:

Clears last digit or entire display.

In Program mode:

Deletes current instruction.

´ CLEAR ∑

Clears statistics storage registers, display,
and the memory stack (described in
section 3).