...
I managed to find this CPB document from yesterday which enumerates the exemptions:
https://content.govdelivery.com/accounts/USDHSCBP/bulletins/3db9e55
and this database in which the category numbers from the above documents can be looked up:
https://hts.usitc.gov
...
HTS Code Product Description
8471 Automatic data processing machines and units thereof; magnetic or optical readers, machines for transcribing data onto data media in coded form, and machines for processing such data.
8473.30 Parts and accessories of the machines of heading 8471, specifically parts and accessories of automatic data processing machines.
8486 Machines and apparatus of a kind used solely or principally for the manufacture of semiconductor boules or wafers, semiconductor devices, electronic integrated circuits, or flat panel displays.
8517.13.00 Smartphones.
8517.62.00 Machines for the reception, conversion, and transmission or regeneration of voice, images, or other data, including switching and routing apparatus.
8523.51.00 Solid-state non-volatile storage devices for the recording of sound or other phenomena.
8524 Records, tapes, and other recorded media for sound or other similarly recorded phenomena.
8528.52.00 Monitors and projectors, not incorporating television reception apparatus, capable of directly connecting to and designed for use with an automatic data processing machine.
8541.10.00 Diodes, other than light-emitting diodes.
8541.21.00 Transistors, with a dissipation rate of less than 1 W.
8541.29.00 Other transistors, not specified elsewhere.
8541.30.00 Thyristors, diacs, and triacs.
8541.49.10 Other photosensitive semiconductor devices, including photovoltaic cells, assembled in modules or made up into panels.
8541.49.70 Other photosensitive semiconductor devices, including photovoltaic cells, not assembled in modules or made up into panels.
8541.49.80 Other photosensitive semiconductor devices, not specified elsewhere.
8541.49.95 Other photosensitive semiconductor devices, not elsewhere specified or included.
8541.51.00 Gallium arsenide light-emitting diodes (LEDs).
8541.59.00 Other light-emitting diodes (LEDs).
8541.90.00 Parts of diodes, transistors, and similar semiconductor devices; photosensitive semiconductor devices, including photovoltaic cells; light-emitting diodes; mounted piezoelectric crystals.
8542 Electronic integrated circuits and microassemblies.