DESIGN AND CONSTRUCTION OF AN ELECTRONIC ATTENDANCE STAFF REGISTER (EAR).

150%;font-family:" palatino="" linotype","serif""="">Abstract:

mso-bidi-font-size:12.0pt;line-height:150%;font-family:" palatino="" linotype","serif""="">The effect of science and technology had led to the development of computers and its application to various production fields. EAR is a new type of attendance software. It is aimed at eliminating the old method of keeping records of staff attendance on daily bases, through electronic means.

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150%;font-family:" palatino="" linotype","serif""="">TABLE OF CONTENTS:

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CHAPTER ONE

INTRODUCTION

line-height:150%;font-family:" palatino="" linotype","serif""="">1.1 LITERATURE REVIEW (INTRODUCTION)

line-height:150%;font-family:" palatino="" linotype","serif""="">1.2 COMPONENTS REVIEW

line-height:150%;font-family:" palatino="" linotype","serif""="">1.2.1 INTEGRATED CIRCUIT (ICs).

line-height:150%;font-family:" palatino="" linotype","serif""="">1.2.1.1 : MICRO CONTROLLER (8952)

line-height:150%;font-family:" palatino="" linotype","serif""="">1.2.2 REGULATOR 7805

line-height:150%;font-family:" palatino="" linotype","serif""="">1.2.1.4 BUFFER 74244

line-height:150%;font-family:" palatino="" linotype","serif""="">1.2.1.5 THE 555 TIMER

line-height:150%;font-family:" palatino="" linotype","serif""="">1.2.2 ACTIVE COMPONENTS

line-height:150%;font-family:" palatino="" linotype","serif""="">1.2.2.1 TRANSISTOR

line-height:150%;font-family:" palatino="" linotype","serif""="">1.2.2.2 RECTIFIER DIODES

line-height:150%;font-family:" palatino="" linotype","serif""="">1.2.2.3 (LED) LIGHT EMITTING DIODES

line-height:150%;font-family:" palatino="" linotype","serif""="">1.2.2.4 CRYSTAL OSCILLATORS

line-height:150%;font-family:" palatino="" linotype","serif""="">1.2.3 PASSIVE DEVICES

line-height:150%;font-family:" palatino="" linotype","serif""="">1.2.3.1 RESISTORS

line-height:150%;font-family:" palatino="" linotype","serif""="">1.2.3.2 TRANSFORMER (STEP-DOWN)

line-height:150%;font-family:" palatino="" linotype","serif""="">1.2.3.3 SWITCHES (THE MICRO-SWITCH (SOFT TOUCH/PUSH) BUTTON SWITCHES).

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CHAPTER TWO

DESIGN AND IMPLEMENTATION

line-height:150%;font-family:" palatino="" linotype","serif""="">2.1 DESIGN OF THE 5 VOLT DC REGULATOR POWER SUPPLY MODULE

line-height:150%;font-family:" palatino="" linotype","serif""="">2.1.1 POWER SUPPLY MODULE

line-height:150%;font-family:" palatino="" linotype","serif""="">2.1.2 THE STEP-DOWN TRANSFORMER

line-height:150%;font-family:" palatino="" linotype","serif""="">2.1.3 RECTIFICATOIN PROCESS

line-height:150%;font-family:" palatino="" linotype","serif""="">2.1.4 GENERAL POWER CIRCUIT OPERATION

line-height:150%;font-family:" palatino="" linotype","serif""="">2.1.5 CALCULATION ON POWER MODULE

line-height:150%;font-family:" palatino="" linotype","serif""="">2.1.6 CALCULATION ON TRANSFORMER

line-height:150%;font-family:" palatino="" linotype","serif""="">2.1.7 CALCULATION ON RECTIFICATION

line-height:150%;font-family:" palatino="" linotype","serif""="">2.1.8 ANALYSIS AND CALCULATION ON FILTERING

line-height:150%;font-family:" palatino="" linotype","serif""="">2.2 DESIGN OF THE DISPLAY MODULE

line-height:150%;font-family:" palatino="" linotype","serif""="">2.3 MICRO-CONTROLLER MODULE

line-height:150%;font-family:" palatino="" linotype","serif""="">2.3.1 1/0 PORT PINS AND THEIR CONFIGURATIONS

line-height:150%;font-family:" palatino="" linotype","serif""="">2.3.2 GENERAL OF THE PULSES (IN SECONDS)

line-height:150%;font-family:" palatino="" linotype","serif""="">2.4 CONSTRUCTION

line-height:150%;font-family:" palatino="" linotype","serif""="">2.5 TESTING

line-height:150%;font-family:" palatino="" linotype","serif""="">2.6 COST LISTING

CHAPTER THREE

DISCUSSIONS AND CONCLUSIONS

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line-height:150%;font-family:" palatino="" linotype","serif""="">3.1 DISCUSSIONS

line-height:150%;font-family:" palatino="" linotype","serif""="">3.1.1 TROUBLE SHOOTING THE DESIGN

line-height:150%;font-family:" palatino="" linotype","serif""="">3.1.2 RESULT

line-height:150%;font-family:" palatino="" linotype","serif""="">3.1.2 PROBLEMS ENCOUNTERED

line-height:150%;font-family:" palatino="" linotype","serif""="">3.2 CONCLUSIONS

APPENDIX

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APA

ShC49Ph5c0009dd836123.71809855, B. (2018). DESIGN AND CONSTRUCTION OF AN ELECTRONIC ATTENDANCE STAFF REGISTER (EAR).. Afribary. Retrieved from https://beta.afribary.com/works/design-and-construction-of-an-electronic-attendance-staff-register-ear-722

MLA 8th

ShC49Ph5c0009dd836123.71809855, BPZusgD5c0009dd813ad5.89971962 "DESIGN AND CONSTRUCTION OF AN ELECTRONIC ATTENDANCE STAFF REGISTER (EAR)." Afribary. Afribary, 29 Jan. 2018, https://beta.afribary.com/works/design-and-construction-of-an-electronic-attendance-staff-register-ear-722. Accessed 07 Feb. 2026.

MLA7

ShC49Ph5c0009dd836123.71809855, BPZusgD5c0009dd813ad5.89971962 . "DESIGN AND CONSTRUCTION OF AN ELECTRONIC ATTENDANCE STAFF REGISTER (EAR).". Afribary, Afribary, 29 Jan. 2018. Web. 07 Feb. 2026. < https://beta.afribary.com/works/design-and-construction-of-an-electronic-attendance-staff-register-ear-722 >.

Chicago

ShC49Ph5c0009dd836123.71809855, BPZusgD5c0009dd813ad5.89971962 . "DESIGN AND CONSTRUCTION OF AN ELECTRONIC ATTENDANCE STAFF REGISTER (EAR)." Afribary (2018). Accessed February 07, 2026. https://beta.afribary.com/works/design-and-construction-of-an-electronic-attendance-staff-register-ear-722

DESIGN AND CONSTRUCTION OF AN ELECTRONIC ATTENDANCE STAFF REGISTER (EAR).

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