Several community platforms provide custom library files for these ICs:
: For PCB design specifically, you can download verified symbols and 3D models from How to Install the Library Files Once you have downloaded the file, follow these steps to add them to your software: Insert HT12E and HT12D in proteus - Forum for Electronics 8 Jan 2013 — ht12e and ht12d proteus library file download link
To bridge this gap, custom library files ( .LIB and .IDX ) have been developed by the Proteus community. These files allow you to place the HT12E (Encoder) and HT12D (Decoder) directly onto your schematic. Several community platforms provide custom library files for
Without these specific library files, users are forced to simulate using logic states rather than realistic components, making it difficult to test the parallel-to-serial encoding logic required for remote control systems. ht12e and ht12d proteus library file download link