Multifunctional electronic abacus for mental abacus calculation study training

The invention relates to a multifunctional electronic abacus for mental abacus calculation study training. The multifunctional electronic abacus for mental abacus calculation study training comprises a processor circuit and a key circuit. The key circuit is connected with the input end of the proces...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	WANG PINGYAO, MO NAYUN, HU KEMAN, XUAN PING, QIU YAOJUN
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	ADVERTISING APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND,DEAF OR MUTE CRYPTOGRAPHY DIAGRAMS DISPLAY EDUCATION EDUCATIONAL OR DEMONSTRATION APPLIANCES GLOBES PHYSICS PLANETARIA SEALS
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