HP (Hewlett-Packard) 50g ユーザーズマニュアル

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With system flag 117 set to SOFT menus, the BASE menu shows the following:
     
With this format, it is evident that the LOGIC, BIT, and BYTE entries within the 
BASE menu are themselves sub-menus.  These menus are discussed later in this 
Chapter.
Functions HEX, DEC, OCT, and BIN
Numbers in non-decimal systems are written preceded by the # symbol in the 
calculator.  The symbol # is readily available as „â(the 3 key).   To select 
which number system (current base) will be used for numbers preceded by #, 
select one of the following functions in the first BASE menu, i.e., HEX(adecimal), 
DEC(imal), OCT(al), or BIN(ary).  For example, if 
@HEX
!
 is selected, any number 
written in the calculator that starts with # will be a hexadecimal number.  Thus, 
you can write numbers such as #53, #A5B, etc. in this system.  As different 
systems are selected, the numbers will be automatically converted to the new 
current base.
The following examples show the same three numbers written with the # symbol 
for different current bases:
HEX
DEC
                
OCT
BIN