speaker
An electro-acoustic transducer that converts electrical signals into sounds loud enough to be heard at a distance. Synonymous with loudspeaker.
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- spear phishing
A type of phishing attack that focuses on a single user or department within an organization, addressed from someone within the company in a position of trust and requesting information such as login IDs and passwords. Spear phishing scams will often appear to be from a company’s own human resources or technical support divisions and […]
- special character
A character that is not a letter, number, symbol, or punctuation mark. Control characters, for example, are special characters, as are special formatting characters such as paragraph marks.
- speech synthesis
Refers to a computer’s ability to produce sound that resembles human speech. Although they can’t imitate the full spectrum of human cadences and intonations, speech synthesis systems can read text files and output them in a very intelligible, if somewhat dull, voice. Many systems even allow the user to choose the type of voice — […]
- spell checker
A program that checks the spelling of words in a text document. Spell checkers are particularly valuable for catching typos, but they do not help much when your misspelling creates another valid word; for example, you type too instead of to. Many word processors come with a built-in spell checker, but you can also purchase […]
- Spider
A program that automatically fetches Web pages. Spiders are used to feed pages to search engines. It’s called a spider because it crawls over the Web. Another term for these programs is webcrawler. Because most Web pages contain links to other pages, a spider can start almost anywhere. As soon as it sees a link […]