You can also import specific IC models from SnapMagic (formerly SnapEDA) , which provides schematic symbols and PCB footprints for a wide range of components. How to Install the Library in Proteus 8
You can find these library files on various engineering community platforms: Ht12e And Ht12d Proteus Library File Download
If you cannot find a dedicated library file, Proteus includes "Generic" or alternative models that behave identically: How to Import HT12E and HT12D IC into Proteus 8 You can also import specific IC models from