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Ninety-Ninety Rule n. ''The first 90% of the code accounts for the first 90% of the development time. The remaining 10% of the code accounts for the other 90% of the development time." Attributed to Tom Cargill of Bell Labs, and popularized by Jon Bentley's September 1985 Bumper-Sticker Computer Science column in Communications of the ACM. It was there called the "Rule of Credibility", a name which seems not to have stuck. |
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NMI /N-M-I/ n. Non-Maskable Interrupt. An IRQ 7 on the PDP-11 or 680[01234]0; the NMI line on an 80[1234]86. In contrast with a priority interrupt (which might be ignored, although that is unlikely), an NMI is never ignored. Except, that is, on clone boxes, where NMI is often ignored on the motherboard because flaky hardware can generate many spurious ones. |
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no-op /noh'op/ n.,v. alt. NOP /nop/ [no operation] 1. A machine instruction that does nothing (sometimes used in assembler-level programming as filler for data or patch areas, or to overwrite code to be removed in binaries). See also JFCL. 2. A person who contributes nothing to a project, or has nothing going on upstairs, or both. As in "He's a no-op." 3. Any operation or sequence of operations with no effect, such as circling the block without finding a parking space, or putting money into a vending machine and having it fall immediately into the coin-return box, or asking someone for help and being told to go away. "Oh, well, that was a no-op." Hot-and-sour soup (see great-wall) that is insufficiently either is no-op soup; so is wonton soup if everybody else is having hot-and-sour. |
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noddy /nod'ee/ adj. [UK: from the children's books] 1. Small and un-useful, but demonstrating a point. Noddy programs are often written by people learning a new language or system. The archetypal noddy program is hello, world. Noddy code may be used to demonstrate a feature or bug of a compiler. May be used of real hardware or software to imply that it isn't worth using. "This editor's a bit noddy." 2. A program that is more or less instant to produce. In this use, the term does not necessarily connote uselessness, but describes a hack sufficiently trivial that it can be written and debugged while carrying on (and during the space of) a normal conversation. "I'll just throw together a noddy awk script to dump all the first fields." In North America this might be called a mickey mouse program. See toy program. |
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node n. 1. [Internet, UUCP] A host machine on the network. 2. [MS-DOS BBSes] A dial-in line on a BBS. Thus an MS-DOS sysop might say that his |
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