The yobibit is a multiple of the bit

Bit

A bit is the basic unit of information in computing and telecommunications; it is the amount of information stored by a digital device or other physical system that exists in one of two possible distinct states...

, a unit of digital information storage, prefixed by the standards-based multiplier yobi (symbol Yi), a binary prefix

Binary prefix

In computing, a binary prefix is a specifier or mnemonic that is prepended to the units of digital information, the bit and the byte, to indicate multiplication by a power of 2...

 meaning 2⁸⁰. The unit symbol of the yobibit is Yibit or Yib.

1 yobibit = 2⁸⁰ bit

Bit

A bit is the basic unit of information in computing and telecommunications; it is the amount of information stored by a digital device or other physical system that exists in one of two possible distinct states...

s = = 1024 zebibit

Zebibit

The zebibit is a multiple of the bit, a unit of digital information storage, prefixed by the standards-based multiplier zebi , a binary prefix meaning 270...

s

The zebi and yobi prefixes were originally not part of the system of binary prefixes, but were added by the International Electrotechnical Commission

International Electrotechnical Commission

The International Electrotechnical Commission is a non-profit, non-governmental international standards organization that prepares and publishes International Standards for all electrical, electronic and related technologies – collectively known as "electrotechnology"...

 in August 2005.

The binary prefixes are not part of the International System of Units

International System of Units

The International System of Units is the modern form of the metric system and is generally a system of units of measurement devised around seven base units and the convenience of the number ten. The older metric system included several groups of units...

(SI).