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I am looking a tool to draw signal, time diagram etc. Are there any software wcih is available in Ubuntu 12.04 ?

Signal can be various :

  • triangle
  • square
  • etc.
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up vote 3 down vote accepted

Specifically designed for developing electronic circuits we may have a look at the collection of tools from the gEDA Install geda collection of tools:

Currently, the gEDA project offers a mature suite of free software applications for electronics design, including schematic capture, attribute management, bill of materials (BOM) generation, netlisting into over 20 netlist formats, analog and digital simulation, and printed circuit board (PCB) layout.from release notes

See also the gEDA project homepage.

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Try LibreCad.

LibreCAD is an application for computer aided design (CAD) in two dimensions (2D). With LibreCAD you can create technical drawings such as plans for buildings, interiors, mechanical parts or schematics and diagrams. 1

It can be downloaded from USC

1Source:Ubuntu Apps

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