Coupling arrangements; Interface arrangements (interface arrangements for digital computers G06F3/00, G06F13/00)

Introduced: January 1990

Title

Titles differ between systems:

IPC: Coupling arrangements; Interface arrangements

CPC: Coupling arrangements; Interface arrangements (interface arrangements for digital computers G06F3/00, G06F13/00)

Full Title

Full titles differ between systems:

IPC:

Logic circuits, i.e. having at least two inputs acting on one output; Inverting circuits > Coupling arrangements; Interface arrangements

CPC:

Logic circuits, i.e. having at least two inputs acting on one output (circuits for computer systems using fuzzy logic G06N7/02); Inverting circuits > Coupling arrangements; Interface arrangements (interface arrangements for digital computers G06F3/00, G06F13/00)

CPC subdivides this area 3x more granularly than IPC with 4 additional codes.

4 codes are CPC-only extensions.

1 shared codes have differing titles between IPC and CPC.

IPC defines codes here since 1990.

Child Classifications

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H03K 19/017509 +2 CPC CPC only CPC only
H03K 19/017545 +2 CPC CPC only CPC only
H03K 19/017581 CPC only CPC only
H03K 19/01759 CPC only CPC only
H03K 19/018 using bipolar transistors only since 1990 +4 CPC IPC+CPC Available in IPC and CPC
H03K 19/0185 using field effect transistors only since 1990 +4 CPC IPC+CPC Available in IPC and CPC