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: The study investigated the impact of early childhood education on immunization rates among young children. The objectives were to assess...
Background to the Study
Office technology and management (OTM) programme is a fundamental part of vocational education in the Department...
ABSTRACT
The purpose of the study wasto assess psycho-social and economic adaptation among people living with HIV/AIDS(PLWHA) in Kaduna S...
CHAPTER ONE
INTRODUCTION
1.1
Background to the Study Environmental sanitation is becoming a major threat to the health of households due to poor main...
ABSTRACT Nigerian payment systems are cash-driven because cash is the main mode of payments for several transactions. However, the Point...
ABSTRACT Children who grown up in the orphanage home may likely to affected in their culture tradition, and religion are...
ABSTRACT This research work is aimed to describe the importance of marketing, one need not to look furt...
Abstract: This study investigates the impact of Industry 4.0 on vocational training in Nige...
ABSTRACT Ineffective school adjustment is one of the challenges of academic achievement in secondary schools in Nigeria. Poor adjustment...
KNOWLEDGE, ATTITUDE AND PRACTICE OF ENVIRONMENTAL SANITATION AMONG HOUSEHOLDS
DETERMINANTS AND ADOPTION OF POINT OF SALES OF SELECTED BUSINESS ORGANISATIONS
IMPACT OF ORPHANAGE HOME ON THE CHILD’S PERSONALITY DEVELOPMENT
THE IMPORTANCE OF MARKETING IN SERVICE ORGANIZATION (A CASE STUDY OF UBA BANK)
THE IMPACT OF INDUSTRY 4.0 ON VOCATIONAL TRAINING
PATH-ANALYTIC INVESTIGATION OF SOME PSYCHO-SOCIAL VARIABLES AFFECTING ADJUSTMENT TO SCHOOL TRANSITION AMONG FRESH SECONDARY SCHOOL STUDENTS IN SOUTHEASTERN NIGERIA