ABSTRACT
This project work deals on the design and implementation of an automatic hand-dryer with display capable of drying up a wet hand inserted under its vent and goes off automatically as soon as the ands are removed. The system also incorporates a decimal counting unit that displays the temperature of the blown out air in 0C. This system is configured using an optp-coupler realized with cadmium-sulphide photocell (c.d.s) at the input. The output of the sensor is conditioned by quad-2-input schmit trigger NAND gate (74132) which serves as the control logic used to trigger a one-shot delay that biases a transistor switch. The transistor commutes a TRIAC (solid state relay) that switches on/off the blower connected to it. When a wet hand is inserted under the vent and blocks the line-of-sight of the sensor, the blower starts to blow automatically as long as the hands are still blocking the c.d.s, else it will stop. The seven-segment display displays the temperature of the blown out air in 0C and resets simultaneously with the switching off of the dryer.
Abstract: Gamification, the application of game-design elements in non-game contexts, has t...
Background to the study
ACHIEVEMENT in the banking industry is influenced by a variety of external vari...
THE USE OF POSTERS AND BILLBOARDS AS VISUAL DATA TO IN EVALUATING THE EFFECTIVENESS OF PROTEST MESSAGING (A CASE STUDY OF ENDBADGOVERNANCE PROTEST)...
BACKGROUND OF THE STUDY
Breastfeeding is the process of feeding an infant mother's milk, either thr...
ABSTRACT: This research explored the impact of early childhood education on nutrition education among young children. The objectives were to evalua...
ABSTRACT
This research work presents development of Firefly algorithm (FA) and application of voltage stability index (VSI) for optimal p...
ABSTRACT
THE MAJOR PURPOSE OF THIS STUDY IS TO EXAMINE THE USES OF COMMITTEES AND GROUP MEETINGS IN ENHANCING DECISION M...
ABSTRACT
In its 50 year history as an independent nation, Nigeria has experienced over two hundred recorded violent ethno-religious distu...
ABSTRACT
This study examined the relationship between human capital development and organizational...
Background Of The