3 GPL Electronic Design Automation
4 ------------------------------------------------------------------------------
6 This file will contain an vocabulary for people to refer to when they are
7 discussing gEDA. Please feel free to comment/expand on all this.
9 This file needs help. If you have something to contribute, please send
10 it my way (ahvezda@geda.seul.org)
13 SHEET A schematic sheet, this is what you see in a gschem window
17 SCHEMATIC Just another name for SHEET
19 BUFFER A more generic term for a SHEET/PAGE/SCHEMATIC (like an emacs
22 SYMBOL A representation of a schematic SHEET
26 (COMPONENT) A component which is part of a SCHEMATIC SHEET. If a user
27 embeds a component then that component becomes part of the
28 SHEET and the schematic no longer depends on the original
29 component .sym file. This makes the sharing of schematic
32 PRIMITIVE A SYMBOL that is part of a LIBRARY
34 LIBRARY Collection of PRIMITIVES - gates, hdl or spice models.
36 PROJECT Whole collection of SHEETS, LAYOUTS, MODELS, documentation
39 DESIGN A very confusing word and should not be used since it means
40 very different things to different people.
42 NET Connects two or more pins in a sheet- is made of one or more
43 SEGMENTS ( a symbolic representation of a wire )
45 SEGMENT Part of a NET - has two endings only
47 LINE Used in drawing symbols, has no electrical significance
49 MODEL A description of how the device behaves. Used in simulations.
50 Can use a HDL or some other representation.
52 HDL Hardware Description Language, used to simulate/document
55 SOURCE Either a SCHEMATIC (SHEET), HDL code, or MODEL which
56 implements, describes, or documents some aspect of the PROJECT
58 PUSH The action of going inside a SYMBOL to see the underlying
61 POP The action of coming out of a SYMBOL (opposite of PUSH).
63 HIERARCHICAL The concept that SYMBOLS can represent (or abstract) SHEETS.
65 SERIES A collection of SHEETS/SYMBOLS which share a common basename
66 (series_1.sch series_2.sch series_3.sch etc...) A series
67 basename ties SHEETS/SYMBOLS together
74 FOOTPRINT - the PCB glyph for a device (?)
75 TRACK - PCB equiv of a net, end to end sense
76 TRACK SEGMENT - line making up a track
77 CORNER - junctions of track segments
78 LAYER - should this be a physical thing or can many
79 logical layers appear in a single physical layer
80 (like the nice layer groups in pcb and in the nascent
82 VIA - a connection from one layer to another through a board
83 PAD - a single connection PCB symbol thingy, part of a