HP 48gII - Manual (Page 637)

Page 19-2
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