Instrument for checking work attendance

The utility model provides an instrument for checking work attendance, which is composed of a memory, a clock display, a reading circuit of identity codes, an LED display circuit, a communication interface circuit, a pressure reducing circuit, and a micro processor. The microprocessor is respectivel...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	YEBING LIU, XIN DONG, XIAPING ZHAO
Format:	Patent
Sprache:	eng
Schlagworte:	ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDEDFOR ELSEWHERE CHECKING-DEVICES GENERATING RANDOM NUMBERS PHYSICS REGISTERING OR INDICATING THE WORKING OF MACHINES TIME OR ATTENDANCE REGISTERS VOTING OR LOTTERY APPARATUS
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