Files with vhd file extension are used by the Quartus II desing software.
There is one other file type using
the VHD file extension!
.vhd - Virtual Hard Disk file [common]
Detailed description
Software that open vhd file
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What is vhd file? How to open vhd files?
The vhd file extension is also related to Quartus II design software, a comprehensive environment available for system-on-a-programmable-chip (SOPC) design.
Quartus II replaces the MAX+PLUS II Software for chip design. These files were also used by MAX+PLUS. This is a text file used in design projects.
The default software associated to open vhd file:
Quartus II design software 
Company or developer:
Altera
Quartus II design software is used to create applications for FPGA and CPLD devices.
Help how to open:
Use Quartus II to work with *.vhd files.
How to convert:
As far as we know, this .vhd file type can't be converted to any other file format. This is usually the case of system, configuration, temporary, or data files containing data exclusive to only one software and used for its own purposes. Also some proprietary or closed file formats cannot be converted to more common file types in order to protect the intellectual property of the developer, which is for example the case of some DRM-protected multimedia files.
List of software applications associated to the .vhd file extension
Recommended software programs are sorted by OS platform (Windows, macOS, Linux, iOS, Android etc.)
and possible program actions that can be done with the file: like open vhd file, edit vhd file, convert vhd file, view vhd file, play vhd file etc. (if exist software for corresponding action in File-Extensions.org's database).
Hint:
Click on the tab below to simply browse between the application actions, to quickly get a list of recommended software, which is able to perform the specified software action, such as opening, editing or converting vhd files.
Software that open vhd file - Quartus II VHDL design data
Programs supporting the exension vhd on the main platforms Windows, Mac, Linux or mobile. Click on the link to get more information about Quartus II design software for open vhd file action.
Programs that can create vhd file - Quartus II VHDL design data
Programs supporting the exension vhd on the main platforms Windows, Mac, Linux or mobile. Click on the link to get more information about Quartus II design software for create vhd file action.
Unspecified and all other actions for computer programs working with vhd file - Quartus II VHDL design data
Click on the software link for more information about Quartus II design software. Quartus II design software uses vhd file type for its internal purposes and/or also by different way than common edit or open file actions (eg. to install/execute/support an application itself, to store application or user data, configure program etc.).
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