* {{Parameter|number}} can be any [[INTEGER]], [[LONG]] or [[_INTEGER64]] value, positive or negative.
* {{Parameter|number}} can also be any [[SINGLE]], [[DOUBLE]] or [[_FLOAT]] value, but only the integer part of the value is converted in that case. That is, from the value ''-123.45'' the function would convert the ''-123'' only.
{{PageDescription}}
* The function returns the base 2 (binary) representation of the given {{Parameter|number}} as [[STRING]].
* Different from [[STR$]], this function does not return a leading sign placeholder space, so no [[LTRIM$]] to strip that space from positive numbers is necessary.
* [[VAL]] can convert the returned bin string value back to a decimal value by prefixing the string with "[[&B]]".
;Note:Although the decimal numbers 0-15 have a maximum width of 2 digits only, an extra space in the ''tableout$'' template is needed when using the (fixed width string) slash output format, as [[STR$]] values contain a leading sign placeholder space.
{{OutputStart}}
Decimal | Hexadecimal | Octal | Binary
---------+-------------+-------+--------
0 | 0 | 0 | 0
1 | 1 | 1 | 1
2 | 2 | 2 | 10
3 | 3 | 3 | 11
4 | 4 | 4 | 100
5 | 5 | 5 | 101
6 | 6 | 6 | 110
7 | 7 | 7 | 111
8 | 8 | 10 | 1000
9 | 9 | 11 | 1001
10 | A | 12 | 1010
11 | B | 13 | 1011
12 | C | 14 | 1100
13 | D | 15 | 1101
14 | E | 16 | 1110
15 | F | 17 | 1111
{{OutputEnd}}
;Example 2:Converting a binary value to decimal.
{{CodeStart}}
binvalue$ = {{Cl|_BIN$}}(255)
{{Cl|PRINT}} "Bin: "; binvalue$
{{Cl|PRINT}} "Converting Bin value to Decimal:"; {{Cl|VAL}}("&B" + binvalue$)