presentation of the project of 4th year 7th

8/7/2019 PRESENTATION OF THE PROJECT OF 4TH YEAR 7TH

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PRESENTATION OF THE PROJECT

OF 4TH

YEAR 7TH

SEMESTER

RCC INSTITUTE OFRCC INSTITUTE OFINFORMATION TECHNOLOGYINFORMATION TECHNOLOGY


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CONTENTS

INTRODUCTION OF MICROCONTROLLER MICROCONTROLLER AT89C51(overview) OBJECTIVE OF THE PROJECT CIRCUIT DIAGRAM PRIME USAGES RESET PIN AND XTAL SCOPES OF IMPROVEMENT CONCLUSION REFERENCES


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INTRODUCT ION

Developed by Intel in 1980 for use in embedded systems. The official designation for the 8051 family is MCS 51. Intel's original 8051 family was developed

using NMOS technology, but later versions,used CMOS technology.

It provides many functions(CPU, RAM, ROM, I/O, interrupt logic, timer, etc.) in asingle package.

That it has four separate register sets, which can be used togreatly reduce interrupt latency.


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THE CH IP

Compatible with MCS-51 Products 4K Bytes of In-System Reprogrammable Flash Memory Endurance: 1,000 Write/Erase Cycles Fully Static Operation: 0 Hz to 24 MHz Three-level Program Memory Lock 128 x 8-bit Internal RAM 32 Programmable I/O Lines Two 16-bit Timer/Counters

Six Interrupt Sources Programmable Serial Channel Low-power Idle and Power-down Modes


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OBJECT IV E


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OBJECT IV E (CONT INUED)

LED CHECKED ADMINISTRATIVE PASSWORD If the user enters the correct password a green LED will

glow and the door will open. The door will close onlyafter the reset pin is activated.

If the user enters the wrong password a red LED willglow and the door would remain closed and an alarmwould start ringing until the reset pin is activated.

If at any point of time administrator wants to change the

user password he will use an INIT pin to do so. The access of the INIT pin is only limited to theadministrator, preventing the user from changing thepassword.


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C IRCU IT


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P R IM E USAGES

Primarily for door security other than lock andkeys

It can also be used to stimulate othercomponents for authentic users The authenticity can be divided into two groups

the admin and the user. Can also be used for file system security


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RESET PI N AND XTAL

Reset pin resets the chip when set high. The capacitor used for reset pin holds charge .

The XTAL is the crystal oscillator which sets theoperating frequency of the chip.

The chip frequency is half of the frequency of

crystal. The oscillator is used for clock synchronization.


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SCO P ES OF IMP RO V EM ENT

The password can only be a combinationof 1s and 0s. the rectification to this can

be using a matrix LED display to displaycharacter password


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CONCLUS ION

The thought project is an initial step towards awhole new world of password security

The thought project can be advanced to a levelof character passwords.

The thought project will have several hurdles of administrative and user password which will be

thought about. The thought project will be unique in the way it

is designed.


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REFERENCES

INTEL 8051(reference manual) 8051 MICROCONTROLLER Muhammad Ali

Mazidi & Jamice Gillespie Mazidi www.8052.com www.atmel.com

www.intel.com www.microchip.com


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Thank you

presentation of the project of 4th year 7th

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