forming cells with positive feedback, i.e. cells not needing refreshing or charge regeneration, e.g. bistable multivibrator or Schmitt trigger

Introduced: January 1990

Full Title

Full titles differ between systems:

IPC:

Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor > using electric elements > using semiconductor devices > using transistors > forming cells with positive feedback, i.e. cells not needing refreshing or charge regeneration, e.g. bistable multivibrator or Schmitt trigger

CPC:

Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor (G11C14/00 - G11C21/00 take precedence) > using electric elements > using semiconductor devices > using transistors > forming cells with positive feedback, i.e. cells not needing refreshing or charge regeneration, e.g. bistable multivibrator or Schmitt trigger

IPC and CPC are identically structured here. All 3 subcodes exist in both systems.

IPC defines codes here since 1990.

Child Classifications

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G11C 11/411 using bipolar transistors only since 1990 +2 CPC IPC+CPC Available in IPC and CPC
G11C 11/412 using field-effect transistors only since 1990 +1 CPC IPC+CPC Available in IPC and CPC
G11C 11/413 Auxiliary circuits, e.g. for addressing, decoding, driving, writing, sensing, timing or power reduction since 1990 IPC+CPC Available in IPC and CPC