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DESIGN AND CONSTRUCTION OF A SIMPLE DOORBELL/ ALARM SYSTEM
2015-09-09
The paper presents the design, construction and testing of a
simple doorbell alarm The principle of operation of this doorbell/
alarm is simple. When the open switch is pressed, the ...
MACARTHY MARIAM DAMILOLA
- OND
DESIGN AND CONSTRUCTION OF A SIMPLE DOORBELL ALARM SYSTEM
2015-09-09
The paper presents the design, construction and testing of a
simple doorbell/ alarm. The principle of operation of this doorbell/
alarm is simple. When the open switch is pressed, the ...
MACARTHY MARIAM DAMILOLA
- OND