Demonstration board for simulating ward calling effect

The utility model discloses a demonstration board for simulating a ward calling effect. The system comprises a ward calling module and a 555 oscillating circuit module, wherein the ward calling moduleis electrically connected with the 16-4 coding circuit module, the 16-4 coding circuit module is ele...

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Bibliographic Details
Main Authors GU XUEJING, LIU HAITAO, XU JINGANG, ZHOU YALUO
Format Patent
LanguageChinese
English
Published 18.10.2019
Subjects
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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Summary:The utility model discloses a demonstration board for simulating a ward calling effect. The system comprises a ward calling module and a 555 oscillating circuit module, wherein the ward calling moduleis electrically connected with the 16-4 coding circuit module, the 16-4 coding circuit module is electrically connected with the BCD code conversion circuit module, the BCD code conversion circuit module is electrically connected with the display decoding circuit module, and the display decoding circuit module is electrically connected with the room number display circuit module. The 555 oscillating circuit module is electrically connected with the frequency dividing circuit module, and the frequency dividing circuit module is electrically connected with the one-out-of-16 data selector circuit module; the one-out-of-16 data selector circuit module is electrically connected with the sound production circuit module; and the 16-4 coding circuit module is electrically connected with the display decoding circuit modul
Bibliography:Application Number: CN201822051072U