Search results
Results From The WOW.Com Content Network
The earliest documented usage of realistic examples as a single source of truth, requirements and automated tests, on software projects is the WyCash+ project, described by Ward Cunningham in the paper A Pattern Language of Competitive Development [7] [8] in 1996. The name Specification by Example was coined by Martin Fowler in 2004. [9]
Today, CAD software related companies such as Autodesk, Dassault Systèmes, PTC, and Netfabb are part of the 3MF Consortium. Other firms in the 3MF Consortium are Microsoft (for operating system and 3D modeling support), SLM and HP , whilst Shapeways are also included to give insight from a 3D printing background. [ 7 ]
Form factor is a hardware design aspect that defines and prescribes the size, shape, and other physical specifications of components, particularly in electronics. [1] [2] A form factor may represent a broad class of similarly sized components, or it may prescribe a specific standard. It may also define an entire system, as in a computer form ...
Geometrical Product Specification and Verification (GPS&V) [1] is a set of ISO standards developed by ISO Technical Committee 213. [2] The aim of those standards is to develop a common language to specify macro geometry (size, form, orientation, location) and micro-geometry (surface texture) of products or parts of products so that the language can be used consistently worldwide.
CAD/CAM data exchange often uses NC files that do not conform to any specification. These files contain a few IPC-NC-349 commands, but follow neither the Excellon nor the IPC-NC-349 specification. Commands are not used properly, or are used in a syntactically incorrect way, and binary data objects may be included.
Various scales may be used for different drawings in a set. For example, a floor plan may be drawn at 1:50 (1:48 or 1 ⁄ 4 ″ = 1′ 0″) whereas a detailed view may be drawn at 1:25 (1:24 or 1 ⁄ 2 ″ = 1′ 0″). Site plans are often drawn at 1:200 or 1:100. Scale is a nuanced subject in the use of engineering drawings.
The format and associated software is structured so that extremely large numbers of components can be quickly loaded, shaded and manipulated in real-time. Because all major 3D CAD formats are supported, a JT assembly can contain a mixture of any combination which has led to the term "multi-CAD".
Although it is a slower process, form factors do evolve regularly in response to changing demands. IBM's long-standing standard, AT (Advanced Technology), was superseded in 1995 by the current industry standard ATX (Advanced Technology Extended), [1] which still governs the size and design of the motherboard in most modern PCs. The latest ...