The 0b Command

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Command Summary

Indicates that a number is written in binary.

Command Syntax

0bdigits

Menu Location

This command can't be found in any menu besides the command catalog.

Calculator Compatibility

This command works on all calculators.

Token Size

2 bytes

The calculator can work with numbers written in three bases: decimal (the usual), binary, and hexadecimal. The 0b command indicates that a number is written in binary:

:0b101
           5
:0b100000
           32

When written in binary, numbers are expressed as signed 32-bit integers, which means that only the integers between -2³¹ and 2³¹-1 can be expressed in binary. With other binary-related commands, numbers are simply truncated to fit in this range. Not so with 0b: if you enter more than 32 binary digits after the 0b, the result is a domain error.

Even if the calculator is in binary mode, you still have to write 0b for an integer to be interpreted as binary: binary mode only affects output. If the calculator is in decimal mode, which is the default, you have to use ▶Bin to get output in binary.

Error Conditions

260 - Domain error happens when 0b is used with more than 32 binary digits after it.

Related Commands

• 0h
• ▶Bin
• ▶Hex