HP (Hewlett-Packard) 35s ユーザーズマニュアル
11-6
The Representation of Numbers
Although the display of a number is converted when the base is changed, its stored
form is not modified, so decimal numbers are not truncated — until they are used in
arithmetic calculations.
form is not modified, so decimal numbers are not truncated — until they are used in
arithmetic calculations.
When a number appears in hexadecimal, octal, or binary base, it is shown 36 bits
(12 octal digits or 9 hexadecimal digits). Leading zeros are not displayed, but they
are important because they indicate a positive number. For example, the binary
representation of 125
(12 octal digits or 9 hexadecimal digits). Leading zeros are not displayed, but they
are important because they indicate a positive number. For example, the binary
representation of 125
10
is displayed as:
1111101b
which is the same as these 36 digits:
000000000000000000000000000001111101b
Negative Numbers
The leftmost (most significant or "highest") bit of a number's binary representation is
the sign bit; it is set (1) for negative numbers. If there are (undisplayed) leading
zeros, then the sign bit is 0 (positive). A negative number is the 2's complement of
its positive binary number.
the sign bit; it is set (1) for negative numbers. If there are (undisplayed) leading
zeros, then the sign bit is 0 (positive). A negative number is the 2's complement of
its positive binary number.
()
()
b
Changes to base 2; BIN
annunciator on. This
terminates digit entry, so no
annunciator on. This
terminates digit entry, so no
is needed between
the numbers.
Result in binary base.
()
Result in hexadecimal base.
()
Restores decimal base.
Keys:
Display:
Description:
()
Enters a positive, decimal
number; then converts it to
hexadecimal.
number; then converts it to
hexadecimal.