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word

(1) See Microsoft Word.

(2) The computer's internal storage unit. Word "size" refers to the amount of data a processor's internal data registers can hold and process at one time. Business computers generally have word sizes of 32 or 64 bits. Computers embedded in appliances and consumer products typically have word sizes of 8, 16 or 32 bits. See bit and byte.

Given the same clock rate, the larger the word and the faster the computer calculates and compares. However, the speed increase depends on the size of the data being calculated. Adding a 16-bit number will not be faster in a computer with 32-bit registers than one with 16 bits, but a 24-bit number will be faster. The 16-bit computer requires additional steps to deal with the 24 bits (16 bits first, then the remaining 8), whereas all 24 bits of the number can fit in the 32-bit register. See MHz.

x86 Architecture
In the x86 PC (Intel, AMD, etc.), although the architecture has long supported 32-bit registers, its native word size stems back to its 16-bit origins, and a "single" word is 16 bits. A "double" word is 32 bits.

Many Word Sizes
Since the advent of computers starting in the 1940s, machines have been designed with a variety of word sizes, including 10, 12, 20, 24, 36, 48 and 60 bits.

A 36-Bit Computer

These are 36-bit PDP computers from Digital Equipment Corporation (DEC). In 1971, they were used to send the first e-mail over the Internet (see e-mail for more detail). Both machines barely totaled 500K of memory. (Image courtesy of Dan Murphy, www.opost.com/dlm)

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word

Computing a set of bits used to store, transmit, or operate upon an item of information in a computer, such as a program instruction

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Word the

1. Christianity the 2nd person of the Trinity

2. Scripture, the Bible, or the Gospels as embodying or representing divine revelation

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word [wȯrd]

(computer science)

The fundamental unit of storage capacity for a digital computer, almost always considered to be more than eight bits in length. Also known as computer word.

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1.		Word - Microsoft Word
2.	(storage)	word - A fundamental unit of storage in a computer. The size of a word in a particular computer architecture is one of its chief distinguishing characteristics. The size of a word is usually the same as the width of the computer's data bus so it is possible to read or write a word in a single operation. An instruction is usually one or more words long and a word can be used to hold a whole number of characters. These days, this nearly always means a whole number of bytes (eight bits), most often 32 or 64 bits. In the past when six bit character sets were used, a word might be a multiple of six bits, e.g. 24 bits (four characters) in the ICL 1900 series.