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It has been suggested that word processing be merged into this article or section. (Discuss) Microsoft Word, a well-known commercial word processor OpenOffice.org Writer, a popular open source/free word processor

A word processor (also more formally known as a document preparation system) is a computer application used for the production (including composition, editing, formatting, and possibly printing) of any sort of viewable or printed material.

Word processors are descended from early text formatting tools (sometimes called text justification tools, from their only real capability). Word processing was one of the earliest applications for the personal computer in office productivity.

Although early word processors used tag-based markup for document formatting, most modern word processors take advantage of a graphical user interface. Most are powerful systems consisting of one or more programs that can produce any arbitrary combination of images, graphics and text, the latter handled with type-setting capability.

Characteristics

Word processing typically refers to text manipulation functions such as automatic generation of:

• batch mailing using a form letter template and an address database (also called mail merging);
• index of keywords and their page numbers;
• table of contents with section titles and their page numbers;
• table of figures with caption titles and their page numbers;
• cross-referencing with section or page numbers;
• footnote numbering

Other word processing functions include "spelling checks" (actually checks against wordlists) and "grammar checking" (checks for what seem to be simple grammar errors).

Word processors can be distinguished from several other, related forms of software:

Text editors, of which vi is an example, were the precursors of word processors. While offering facilities for composing and editing text, they do not format documents. This can be done by batch document processing systems, starting with TJ-2 and RUNOFF and still available in such systems as LaTeX (as well as programs that implement the paged-media extensions to HTML and CSS). Text editors are now used mainly by programmers and website designers, and by computer system administrators for creating and editing configuration files. They are also useful when fast initiation times, small file sizes and portability are preferred over formatting.

Later desktop publishing programs were specifically designed to allow elaborate layout for publication, but often offer only limited support for editing. Typically, desktop publishing programs allow users to import text that they have written using a text editor or word processor.

The word processor is a standard component of the "office suite" (set of software for office use), and publishers of these suites tend to push these rather than the less profitable word processors.

Origin of word processing

The term word processing was devised by IBM in the 1960s, and originally encompassed all business equipment — including manually operated typewriters — concerned with the handling of text as opposed to "data". Electromechanical paper-tape-based equipment such as the Friden Flexowriter had long been available; the Flexowriter allowed for operations such as repetitive typing of form letters (with a pause for the operator to manually type in the variable information). In the sixties it began to be feasible to apply electronic computers to office automation tasks. IBM's Mag-Card Selectric was an early device of this kind. It allowed editing, simple revision, and repetitive typing, with a one-line display for editing single lines.

In the early 1970s Linolex, Lexitron and Vydec introduced pioneering word-processing systems with CRT display editing, but the real breakthrough occurred in 1976 with the introduction of a CRT-based system by Wang Laboratories. (A Canadian electronics company, Applied Electronic Systems, introduced a similar product in 1974, but went into bankruptcy a year later. In 1976, refinanced by the Canada Development Corporation, it returned to operation as AES Data, and went on to successfully market its brand of word processors worldwide until its demise in the mid-1980s.) This was a true office machine, affordable by organizations such as medium-sized law firms. It was easily learned and operated by secretarial staff.

The Wang word processor displayed text on a CRT screen, and incorporated virtually every fundamental characteristic of word processors as we know them today. The phrase "word processor" rapidly came to refer to CRT-based machines similar to Wang's. Numerous machines of this kind emerged, typically marketed by traditional office-equipment companies such as IBM, Lanier (marketing AES Data machines, re-badged), CPT, and NBI. All were specialized, dedicated, proprietary systems. Cheap general-purpose computers were still the domain of hobbyists.

Some of the earliest CTR-based machines used cassette tapes for removable-memory storage until floppy diskettes became available for this purpose - first the 8-inch floppy, then the 5-1/4-inch. Printing of documents was initially accomplished using IBM Selectric typewriters modified for ASCII-character input. These were later replaced by application-specific daisy-wheel printers (Diablo, which became a Xerox company, and Qume - both now defunct). For quick "draft" printing, dot-matrix line printers were optional alternatives with some word processors.

With the rise of personal computers, and in particular the IBM PC and PC compatibles, software-based word processors running on general-purpose commodity hardware gradually displaced dedicated word processors, and the term came to refer to software rather than hardware.

Early word-processing software required users to memorize semi-mnemonic key combinations rather than pressing keys labelled "copy" or "bold." (In fact, many early PCs lacked cursor keys; WordStar famously used the E-S-D-X-centered "diamond" for cursor navigation.) However, the price differences between dedicated word processors and general-purpose PCs, and the value added to the latter by software such as VisiCalc, were so compelling that personal computers and word processing software soon became serious competition for the dedicated machines.

The late 1980s saw the advent of laser printers, a "typographic" approach to word processing (WYSIWYG - What You See Is What You Get), using bitmap displays with multiple fonts (pioneered by the Xerox Alto computer and Bravo word processing program), and graphical user interfaces (another Xerox PARC innovation, with the Gypsy word processor). These were popularized by MacWrite on the Apple Macintosh in 1983, and Microsoft Word on the IBM PC in 1984; these were probably the first true WYSIWYG word processors to become known to many people. Dedicated word processors became museum pieces.

See also

• List of word processors
• Comparison of word processors
• Amstrad PCW
• Canon Cat
• Office suite
• Typography
• Wang Laboratories

External links

• Word Processors at SourceForge
• "Word Processors: Stupid and Inefficient" - editorial by Allin Cottrell
• FOSS word processors compared: OOo Writer, AbiWord, and KWord by Bruce Byfield
• Citations by CiteSeer
• History of Word Processing

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