Erratum or corrigendum (plurals: errata, corrigenda) is a correction of a manual, handbook or other nonfictional text that contained mistakes. Errata are most commonly issued shortly after the original text was published. Patches to security issues in a computer program are also sometimes called errata. As a general rule, publishers issue an erratum for a production error (i.e. an error introduced during the publishing process) and a corrigendum for an author's error. Wikipedia does not have an article with this exact name. ... Wiktionary (a portmanteau of wiki and dictionary) is a multilingual, Web-based project to create a free content dictionary, available in over 150 languages. ... A computer program is a collection of instructions that describe a task, or set of tasks, to be carried out by a computer. ...

Errata sheets

An errata sheet is a common method of post-production editing in which the errors left in the produced copy are outlined on a sheet of paper bound into the book. This is a common method by which large works are "edited"; i.e. if the volume would cost too much and/or be too cumbersome to correct internally, this is an acceptable method by which one might edit the work.

It should be noted that errata sheets should only outline minor errors within a work (e.g. misspellings, improper punctuation and the like). If a major error in the construction of a sentence occurs, or if the construction is such that the idea that the sentence delivers is unclear or distorted to the point of confusion or the delivery of the wrong idea, this must be corrected within the work.

Meanings in a non-editorial context

• Design errors and mistakes in a CPU's hardwired microcode may also be referred to as an erratum. One well publicised example is Intel's "flag" erratum in early Pentium Pro processors. This made the conversion of floating point numbers to integers unreliable due to an exception not being signaled under certain conditions.

Die of an Intel 80486DX2 microprocessor (actual size: 12×6. ... A microprogram is a program consisting of microcode that controls the different parts of a computers central processing unit (CPU). ... Intel Corporation (NASDAQ: INTC, SEHK: 4335), founded in 1968 as Integrated Electronics Corporation, is an American multinational corporation that is best known for designing and manufacturing microprocessors and specialized integrated circuits. ... Pentium Pro 256 KB Pentium Pro 512 KB Pentium Pro 1 MB Pentium Pro underside (256/512) Pentium II Overdrive The Pentium Pro is a sixth-generation x86 architecture microprocessor (P6 core) by Intel originally intended to replace the original Pentium in a full range of applications, but later reduced... A floating-point number is a digital representation for a number in a certain subset of the rational numbers, and is often used to approximate an arbitrary real number on a computer. ... The integers consist of the positive natural numbers (1, 2, 3, …) the negative natural numbers (−1, −2, −3, ...) and the number zero. ... Exception handling is a programming language construct or computer hardware mechanism designed to handle the occurrence of some condition that changes the normal flow of execution. ...

External links

• WikiBooks:Errata - A WikiBooks project collecting errata from printed works and organizing them by ISBN or PMID.
• Pentium Pro Flag Erratum