DIFF Subgroup
G11C 11/40 using transistors
Introduced: September 1968
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
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
IPC and CPC are identically structured here. All 2 subcodes exist in both systems.
IPC defines codes here since 1990.
Child Classifications
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- G11C 11/401 forming cells needing refreshing or charge regeneration, i.e. dynamic cells since 1990 IPC+CPC Available in IPC and CPC
- G11C 11/41 forming cells with positive feedback, i.e. cells not needing refreshing or charge regeneration, e.g. bistable multivibrator or Schmitt trigger since 1990 IPC+CPC Available in IPC and CPC