What is digit? - Definition from WhatIs.com
Part of the Computing fundamentals glossary:

A digit is an element of a set that, taken as a whole, comprises a system of numeration. Thus, a digit is a number in a specific context. In the decimal (base-10) Arabic numbering system, the digits are the elements of the set {0, 1, 2, 3, 4, 5, 6, 7, 8, 9}.

In the binary number system, the digits are the elements of the set {0, 1}. This system is used by computers because the two digits can represent the logic low and high states. The term "binary digit" is compressed to " bit " in computer parlance. Other numbering systems used in computing include the octal and hexadecimal systems. In the octal number system, the digits are the elements of the set {0, 1, 2, 3, 4, 5, 6, 7}. In the hexadecimal system, the digits are the elements of the set {0, 1, 2, 3, 4, 5, 6, 7, 8, 9, A, B, C, D, E, F}.

The term "digit" is often used to represent a number in a specific position in a larger number, or in a number with a fraction expressed using a radix point. For example, in the decimal number 2609.37, the number 2 is the thousands digit, the number 6 is the hundreds digit, the number 0 is the tens digit, the number 9 is the ones digit, the number 3 is the tenths digit, and the number 7 is the hundredths digit.

In biology and anatomy, the term refers to a finger or toe of a human or animal. In robotics, the term can refer to any small, useful appendage in an end effector (robot hand).

This was last updated in September 2005
Posted by: Margaret Rouse

Related Terms

Definitions

  • neural network

    - A neural network is a hardware and software system based on the operation of neurons in the human brain that can learn from and adapt to training and pattern recognition. (SearchNetworking.com)

  • bitwise

    - Bitwise operations manipulate data at the bit level rather than with bytes or larger units of data, as is more common. Most operators work with either single or multiple bytes, which in most system... (WhatIs.com)

  • slack space (file slack space)

    - Slack space is the difference between its logical and physical size. The logical size of a file is determined by the file’s actual size and is measured in bytes. The physical size of a file is dete... (WhatIs.com)

Glossaries

  • Computing fundamentals

    - Terms related to computer fundamentals, including computer hardware definitions and words and phrases about software, operating systems, peripherals and troubleshooting.

  • Internet applications

    - This WhatIs.com glossary contains terms related to Internet applications, including definitions about Software as a Service (SaaS) delivery models and words and phrases about web sites, e-commerce ...

Ask a Question. Find an Answer.Powered by ITKnowledgeExchange.com

Ask An IT Question

Get answers from your peers on your most technical challenges

Ask Question

Tech TalkComment

Share
Comments

    Results

    Contribute to the conversation

    All fields are required. Comments will appear at the bottom of the article.