DIFF Main Group
G09B 7/00 Electrically-operated teaching apparatus or devices working with questions and answers (mechanically operated G09B3/00; computing arrangements G06F)
Introduced: September 1968
Title
Titles differ between systems:
IPC: Electrically-operated teaching apparatus or devices working with questions and answers
CPC: Electrically-operated teaching apparatus or devices working with questions and answers (mechanically operated G09B3/00; computing arrangements G06F)
Full Title
Full titles differ between systems:
IPC:
Electrically-operated teaching apparatus or devices working with questions and answers
CPC:
Electrically-operated teaching apparatus or devices working with questions and answers (mechanically operated G09B3/00; computing arrangements G06F)
IPC and CPC are identically structured here. All 2 subcodes exist in both systems.
2 shared codes have differing titles between IPC and CPC.
Child Classifications
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- G09B 7/02 of the type wherein the student is expected to construct an answer to the question which is presented or wherein the machine gives an answer to the question presented by a student IPC+CPC Available in IPC and CPC
- G09B 7/06 of the multiple-choice answer-type, i.e. where a given question is provided with a series of answers and a choice has to be made from the answers +2 CPC IPC+CPC Available in IPC and CPC