| Subject | English | Bulgarian |
| comp., MS | COM class | COM клас (A concrete implementation of one or more COM interfaces. COM objects are instances of COM classes) |
| comp., MS | COM object | COM обект (An instance of a COM class) |
| comp., MS | COM port | COM порт (A serial communications port used to connect a device, such as a modem, printer, or mobile device, to a computer) |