IEC60730 Annex H The standard applies to electronic controls and controls using software and therefore as is typically the case in modern appliances, the use of a microcontroller(s). Designers must therefore consider at the outset of their development what features the microcontroller will require in terms of hardware & software in order to comply with the requirements of the standard. Among others, Annex H of IEC60730 explains the details of test and diagnostic methods for the Microcontrollers.