HP 49g Graphing Calculator - Manual (Page 79)

The settings for flags -11 and -12 determine the current base. The DEC,
HEX, OCT, and BIN commands control the settings of these flags:
-11
Set Clear
-12
Set Hex Bin
Clear Oct Dec
An annimciator on your default screen indicates the current base setting.
To set the wordsize
1. Press 0(®STWS.
2. Key in the new wordsize (from 1 to 64).
3. Press (ENTER).
In RPN mode: follow steps 2 and 1.
If a binary integer argiunent exceeds the current wordsize, the excess
leading bits are dropped before the command is executed. If necessary,
results are also tiamcated.
To recall the current wordsize
1. Press 0@SE) Rcws.
2. Press (EB).
In RPN mode: follow step 1 only.
To enter a binary integer
1. Press 0@.
2. Enter the value of the binary integer.
3. Enter the suffix tlrat indicates the base you want to use: d, h, o, or b.
Your entry must be a lower-case character.
Step 3 is optional if the base you want to use is the same as the
current base setting.
4. Press Щ
Page 8-2 Number bases