Once you find the library files, download them to your computer. Make sure to download the correct library files for your Proteus version.
You can find these library files on community-driven electronics sites: The Engineering Projects : Known for providing custom libraries like Raspberry Pi Arduino sensors SnapMagic (formerly SnapEDA) : Offers a Proteus Library Search Ht12e And Ht12d Proteus Library File Download
You can search for the Ht12e and Ht12d Proteus library files on various websites that offer Proteus library files, such as Electronics Engineering and Technology, Proteus Library, and others. You can also search on online marketplaces like GitHub or SourceForge. Once you find the library files, download them
After downloading, you will typically get: Once you find the library files
Search on Google or electronics forums (like The Engineering Projects or Project Guidance ) for: .