Automatic Railway Level Crossing Essay

Summary: Within the quickly flourishing nation like ours, accidents within the unmanned degree crossings are growing daily. No fruitful steps have been taken thus far in these areas. The target of our undertaking is to offer an automated railway gate at a level-crossing changing the gates operated by the gatekeeper. It offers with two issues. Firstly, it offers with the discount of time for which the gate is being saved closed. And secondly, it supplies security to the highway customers by lowering the accidents.

By using the automated railway gate management on the degree crossing the arrival of the practice is detected by the sensors positioned close to to the gate and transmits the data to the gate controller through wired or wi-fi. Therefore, the time for which it's closed is much less in comparison with the operated by hand gates. The operation is automated i. e. , error as a result of guide operation is prevented. By using the automated railway gate management on the degree crossing the arrival of practice is detected by the sensor positioned on both facet of the gate at about 3km from the extent crossing.

Therefore, the time for which it's closed is much less in comparison with the operated by hand gates and in addition reduces the human labour. Any such gates will be employed in an unmanned degree crossing the place the probabilities of accidents are greater and dependable operation is required. Since, the operation is automated error as a result of guide operation shall be prevented. As soon as the arrival of the practice is sensed, the sensed sign is shipped to the microcontroller through, wired or wi-fi transmission and it checks for potential presence of car between the gates.

Subsequently, buzzer indication and lightweight indicators on both facet are offered to the highway customers indicating the closure of gates. As soon as, no car is sensed in between the gate the motor is activated and the gates are closed. However, for the worst case if any impediment is sensed it's indicated to the practice driver by indicators (RED) positioned at about 1km, in order to convey it to halt properly earlier than the extent crossing. When no impediment is sensed GREEN mild is indicated, and the practice is to free to maneuver. The departure of the practice is detected by sensors positioned at about 1km from the ate. The sign concerning the departure is shipped to the microcontroller, which in flip operates the motor in reverse method and opens the gate. Thus, the time for which the gate is closed is much less in comparison with the operated by hand gates. Additionally reliability is excessive as it isn't subjected to guide errors. Elements : IR sensors or Vibration sensors, Microcontroller, L293D(driver IC), Stepper motor, Wi-fi Transmitter and Receiver, energy provide. HARDWARE IMPLEMENTATION Micro Controller Completely 40-pin DIP package deal manufactured with

CMOS Expertise. L293D (motor driver IC) Racially L293D 16DIP /ULN 2003 IC is used to drive the stepper motor. STEPPER MOTOR That is used to open and shut the gates robotically when it's rotated clock sensible or anticlockwise path. Stepper motor requires 500m amps present, so use the L293D drivers to drive the stepper motor. SOFTWARE IMPLEMENTATION Keil By 1. B. BHARATH KUMAR REDDY – 113004045 2. P SAMBASIVA RAO – 113004161 three. T. RANGA VINOD KUMAR – 113004207 four. T. SIVA NARAYANA REDDY – 113004205

Automatic Traffic Light Control(Presidency University) Essay

Azimur Rahman Schooll of Engineering Presidency College Design and Implementation of Computerized Site visitors Mild Managed System Approval “Design and Implementation of Computerized Site visitors Mild Managed Syetem” was ready and submitted by Md. Humaun Kabir (ID:091-033-040),Amam hossain Bagdadee(ID:101-205-041),Md. Rabiul Islam(ID:091-033-040),Md. Nurul Alam(ID:071-012-040) and as been discovered passable when it comes to scope ,high quality and presentation as partial achievement of the requirement for the Bachelor of Science in Electrical and Digital Engineering in Presidency College.

Cheeked and authorized by Thesis Supervisor …………………………………………………………………………………………. Professor Dr. Tapon Kumar Chakraborty Dean and Division Head Division of Electrical and Laptop Engineering Azimur Rahman College of Engineering Presidency College Design and Implementation of Computerized Site visitors Mild Managed System Acknowledgement Desires by no means flip to actuality except a number of effort and arduous work  is put in to it. And no effort bears fruit within the absence of assist and steerage.

It takes a number of effort to work your approach by means of  this purpose and having somebody to information you and assist you to is  all the time a blessing.

We want to take this chance to thank just a few who have been intently concerned within the completion of this venture. Ingenuity and well-liked steerage are inevitable for profitable completion of a venture. We're indebted to all sources  that helped them in figuring out this venture at every steps of its  progress. Explicit we extraordinarily grateful to Mission Supervisor Professor Dr.

Tapan Kumar Chakraborty, Division of Electrical & Laptop Engineering for his useful  suggestion and correct steerage to finish my venture. Above  all we thank the lord almighty for giving me all the arrogance and talent to realize this dream ! Design and Implementation of Computerized Site visitors Mild Managed System Summary Site visitors sign managed is enjoying an increasing number of essential roles in trendy administration and controls of city site visitors to cut back the accident and site visitors jam in street.

The gasoline lantern was turned with a lever at its base in order that the suitable gentle confronted site visitors. Sadly, it exploded on 2 January1869, in throughout the policeman who was working it. The trendy electrical site visitors gentle is an American invention. As early as 1912 in Salt Lake Metropolis, Utah, policeman Lester Wire invented the primary red-green electrical site visitors lights. On5 August1914,theAmerican Site visitors Sign Firm put in a site visitors sign system on the nook of East 105th Road and Euclid Avenue in Cleveland,Ohio.

It had two colours, purple and inexperienced, and abuzzer,based mostly on the design of James Enormous, to supply a warning for coloration adjustments. The design by James Hog allowed police and hearth stations to regulate the indicators in case of emergency. The primary four-way, three-color site visitors gentle was created by police officer William PottsinDetroit, Michigan in 1920. In 1923, Garrett Morgan attended a site visitors sign gadget. It was Morgan’s expertise whereas driving alongside the streets of Cleveland that led to his invention of a site visitors sign gadget. Ashville, Ohio claims to be the placement of the oldest

Working site visitors gentle in the USA, used at an intersection of public roads till 1982 when it was moved to native museum. The primary inter linked site visitors sign system was put in inSaltLake Metropolis in 1917, with six linked inter sections managed concurrently from a guide change. Computerized management of inter linked site visitors lights was launched March 1922 in Houston, Texas. The primary computerized experimental site visitors lights in England have been deployed inWolverhamptonin 1927. Ape-man chenpedestrian site visitors indicators have come to be seen as a nostalgic signal for the previous German Democratic Republic.

The colour of the site visitors lights representing cease and go are seemingly derived from these used to determine port (purple) and starboard (inexperienced) in maritime guidelines governing proper of approach, the place the vessel on the left should cease for the one crossing on the correct. Determine: Four Lanes Highway. TECHNOLOGY Optics and lighting:- Within the mid-1990s, cost-effective site visitors gentle lamps utilizing light-emitting diodes (LEDs) have been developed; previous to this date site visitors lights have been designed usingincandescentorhalogenlight bulbs.

Not like the incandescent-based lamps, which use a single massive bulb, the LED-based lamps encompass an array of LED parts, organized in numerous patterns. When seen from a distance, the array seems as a steady gentle supply. LED-based lamps (or ‘lenses’) have quite a few benefits over in candescent lamps; amongst them are: •A lot higher vitality effectivity (could be solar-powered). •For much longer lifetime between replacements, measured in years reasonably than months. A part of the longer life time is because of the truth that some gentle continues to be displayed even when a few of the LEDs within the array are useless. Brighter illumination with higher distinction towards direct daylight, additionally known as ‘phantom gentle’. •The power to show a number of colours and patterns from the identical lamp. Particular person LED parts could be enabled or disabled and completely different coloration LEDs could be blended in the identical lamp •A lot sooner switching. •As an alternative of sudden burn-out like incandescent-based lights, LED begin to progressively dim after they put on out, warning transportation upkeep departments properly upfront as to when to vary the sunshine. Sometimes, notably in inexperienced LED items, segments vulnerable to failure will flicker quickly beforehand.

The operational bills of LED-based indicators are far decrease than equal incandescent-based lights. In consequence, most new site visitors gentle deployments in the USA, Canada and elsewhere have been carried out utilizing LED-based lamps; as well as many present deployments of incandescent site visitors lights are being changed. In2006, Edmonton, Alberta, Canada accomplished a complete refit to LED-based lamps within the cities over 12,000 Intersections and all pedestrian crosswalks. Most of the extra unique site visitors indicators mentioned on this web page wouldn't be doable to assemble with out utilizing LED expertise.

Nevertheless, color-changing LEDs are of their infancy and will surpass the multi-color array expertise. In some areas, LED-based indicators have been fitted (or retrofitted) with particular Fresnel lenses (Programmed Visibility or ‘PV’ lenses) and/or diffusers to Restrict the road of sight to a single lane. These indicators usually have a “projector”-like visibility; and keep an deliberately restricted vary of view. As a result of the LED lights don’t generate a major quantity of warmth, heaters could also be needed in areas which obtain snow, the place snow can accumulate inside the lens space and restrict the visibility of the indications.

One other new LED expertise is the usage of CLS (Central Mild Supply) optics. These comprise round 7 high-output LEDs (typically 1 watt) on the rear of the lens, with a diffuser to even outland enlarge the sunshine. This offers a uniform look, extra like conventional halogen or incandescent luminaries. Changing halogen or incandescent reflector and bulb assemblies behind the lens with an LED array may give the identical impact. This additionally has its advantages: minimal disruption, minimal work, minimal price and the diminished want to exchange the whole sign head (housing).

THE PROJECT Design of Site visitors-Management System: Via the venture ‘Superior Automobiles and Car-Management Information Centre’, the Hungarian Nationwide Workplace for Analysis and Expertise helps the design of clever traffic-control techniques. The primary purpose of the venture is to interlace technological switch by connecting universities, analysis facilities and main industrial companions. Automotive applied sciences are gaining floor in trendy street traffic-control techniques, for the reason that variety of street autos and passengers is quickly rising.

There's a perpetual want for safety-critical site visitors automation, and site visitors engineering makes the dynamic or static evaluation and the synthesis of automotive automobile applied sciences doable. The primary purpose of engineering is the planning and administration of site visitors techniques. The venture helps the event of dependable and optimum management constructions for city site visitors and for motorway techniques. The clever and cooperative set-up of actuation and its linkage to the central management system is important for avoiding site visitors jams and accidents.

Furthermore, environmental prices (e. g. air pollution) could be decreased. The management structure of systemic proven in Determine 1. | Determine 1: Common site visitors administration and management construction. | | One facet of the venture goals at growing a site visitors management algorithm for future expertise. The design of the site visitors management system could be evaluated in two steps – synthesis and evaluation. A number of fashions and a number of management methods exist, and engineers should resolve between them utilizing a priori data of the actual system.

Beforehand collected data will help to decide on the suitable mannequin, parameters, measurement and management methodologies to create the optimum resolution. In lots of instances, control-related variables are nearly inaccessible for design except estimation methods are utilized. In a state of affairs like this, the approximation, computer-based estimation of the variables might be helpful. Site visitors simulations could be categorized in a number of methods, together with the division between microscopic, macroscopic and macroscopic, and between steady and discrete time approaches.

The methodologies of static and dynamic evaluation of site visitors techniques are identified. A number of state variables, derived from the outline of the dynamic system, can be utilized for operational and planning facets. A newly emerged space is demand estimation by means of microscopic site visitors modeling. The dynamic facet of site visitors simulation requires beforehand measured or estimated volumes of site visitors. Because the measurement of sure variables within the dynamic description is reasonably pricey, one tries to estimate them.

As an example, the commentary of regularly various turning charges at a easy intersection is pretty pricey. Nevertheless, the variety of turning autos might be utilized to site visitors gentle harmonization, or typically talking to site visitors gentle management. | Determine 2: Site visitors jam in Dhaka Metropolis. | | A while has handed since site visitors points have been first addressed; in actual fact, site visitors lights apparently existed a century in the past. After they have been first launched, their function was to make sure the protection of individuals within the site visitors, however as time has handed and site visitors has turn out to be denser, flow-control points have turn out to be essential.

These days, management algorithms are extraordinarily difficult, and take traffic-dependent light-control architectures under consideration. Nonetheless, complementary capabilities exist to reinforce the intelligence of such techniques. The conduct of site visitors is influenced by two fundamental elements: the management inputs and the disturbances incurred. The management inputs are instantly associated to corresponding management gadgets akin to site visitors lights and variable message indicators. The manipulation of disturbance Values isn't doable, however in some instances they're measurable (e. g. demand), detectable (e. g. ncident) or predictable over a sure time horizon. Probably the most difficult points relate to computerized incident detection, the modeling of uncertainties, offering an answer that provides robustness below exterior disturbances, the usage of variable message indicators as a way to keep away from site visitors jams, and discovering an optimum itinerary. The event of an clever management construction ensures an optimum resolution for all individuals within the transportation and street site visitors system. After the primary yr, probably the most important results of the venture is the structural evaluation of the references.

A number of comparative research have been elaborated to create a foundation for additional analysis on estimation and optimum light-control techniques. Goal: The purpose of this venture is to given alternative to apply designing and implementing sequential machine on this case, a site visitors gentle controller. On this venture, intergated circuit(IC’s) was chosen to design to site visitors controller. The aim of this venture is to design an computerized, save and environment friendly site visitors move to assign the correct approach of the street. This venture it was wanted to design site visitors management indicators and implement to make sure whether or not this circuit is functioning or not.

From that lower a ready time in street can scale back site visitors jam within the street. The anticipated outcomes of this venture are three lanes can inexperienced different lanes are purple on the identical time. The results of this venture can carried out with bulbs. (RED,YELLOW,GREEN) Elements Required 1. Built-in Circuit 1. IC-1 (555) 2. IC-2 (CD4017) 1. Resistors three. R1 (10Okay) Four. VR1 (100Okay) 2. Capacitor 5. C1 (100mfd/ 16V) three. Diode 6. D1-D9 (IN4007) Four. Transistor 7. T1 (BC148) eight. T2 (BC148) 9. T3 (BC148) 5. Miscellaneous 10. Three Relays 11. Battery (9V DC) 12. Neon lamp 13. Versatile wires 14. Soldering rod and so on.

CIRCUIT DIAGRAM: Determine: Circuit Diagram of Site visitors System. Circuit Structure: Determine: Circuit Structure of Site visitors System. PCB LAWOUT: Determine: PCB Structure of Site visitors Sign. The working Precept: This circuit is self explanatory by its identify, and can be utilized to regulate site visitors in public locations, or to reveal site visitors guidelines in traffic-parks. IC2, which is coronary heart of the circuit, is a decade counter. On this counter for each pulse fed to pin-14, potential retains shifting from D1 to D9 in cyclic order. IC1 is used as a pulse generator and generates pulses in common configurable intervals.

These intervals could be modified by various VR1. The circuit is designed in such a approach that out of 9 pulses, relay RL1 stays triggered for Four pulses, relay RL2 for 1 pulse and relay RL3 for remaining Four pulses. Since D1-D4 present present to T1, T1 is on each time there's potential on any diode D1 to D4, which retains relay RL1 triggered. Equally different diodes are answerable for RL2 and RL3 triggering. Crimson, Yellow and Inexperienced lamps could be linked to the relays RL1, RL2 and RL3 respectively to finish your mini site visitors gentle controller. Determine: Four-Lane Highway Site visitors Sign Planning.

DESCRIPTION OF MAJOR COMPONENTS: 555 Timers –IC It's principally an eight–pin timer IC, which might produce exact time delay. It really works on big selection of energy provide voltage from 3V to 18V. The perform of every pin of the IC is given under – * Pin–1: it's linked to floor (0V) terminal of energy provide. * Pin–2: It begins up timing cycle, when its voltage is lower than ? Vcc, the output of IC turns into excessive (1). * Pin–three: it's output pin which both supply or sinks present as much as 200mA. * Pin–Four: it's reset pin. When it's + ve, IC works usually.

Nevertheless, when it's –ve, IC stops its working fully. * Pin–5: management voltage pin. It might not be utilized in regular working. * Pin–6: it's threshold pin. It finalizes the timing cycle of the IC, when its voltage is the same as or higher than ? Vcc, the output of IC turns into low (Zero). * Pin–7: it's discharge pin. It discharges exterior capacitor into itself. * Pin–eight: it's linked to + ve terminal of battery, typically three–18V. When the set off is utilized (i. e. change is closed), the ‘Set off’ terminal (inserting terminal of decrease comparator) is instantly linked to the bottom(0V).

This toggles the output of decrease comparator from LOW to HIGH. So the SET terminal of FLIPFLOP is at HIGH, toggling the Q’ to LOW. The output is Determine: 555timer output with excessive frequency Determine: 555timer output with excessive frequency 4017 Decade Counter: The rely advances because the clock enter turns into excessive (on the rising-edge). Every output Q0-Q9 goes excessive in flip as counting advances. For some capabilities (akin to flash sequences) outputs could also be mixed utilizing diodes. The reset enter ought to be low (0V) for regular operation (counting Zero-9). When excessive it resets the rely to zero (Q0 excessive).

This may be performed manually with a change between reset and +Vs and a 10ok resistor between reset and 0V. Counting to lower than 9 is achieved by connecting the related output (Q0-Q9) to reset, for instance to rely Zero,1,2,three join This fall to reset. The disable enter ought to be low (0V) for regular operation. When excessive it disables counting in order that clock pulses are ignored and the rely is saved fixed. The ? 10 output is excessive for counts Zero-Four and low for 5-9, so it offers an output at 1/10 of the clock frequency. It may be used to drive the clock enter of one other 4017 (to rely the tens).

Resistor: A resistor is a passive two-terminal electrical element that implements electrical resistance as a circuit aspect. The present by means of a resistor is in direct proportion to the voltage throughout the resistor’s terminals. Thus, the ratio of the voltage utilized throughout a resistor’s terminals to the depth of present by means of the circuit known as resistance. This relation is represented by Ohm’s legislation: Determine: Image of Resistror. Capacitor: A capacitor (initially referred to as condenser) is a passive two-terminal electrical element used to retailer vitality in an electrical discipline.

The types of sensible capacitors fluctuate extensively, however all comprise not less than two electrical conductors separated by a dielectric (insulator); for instance, one widespread development consists of metallic foils separated by a skinny layer of insulating movie. Capacitors are extensively used as elements circuits in lots of widespread electrical gadgets. The capacitor is a fairly normal mannequin for electrical fields inside electrical circuits. A super capacitor is wholly characterised by a relentless capacitance C, outlined because the ratio of cost ±Q on every conductor to the voltage V between them: Determine: Image of Capacitor.

Transistor: A transistor is a semiconductor gadget used to amplify and change digital indicators and electrical energy. It's composed of semiconductor materials with not less than three terminals for connection to an exterior circuit. A voltage or present utilized to at least one pair of the transistor’s terminals adjustments the present flowing by means of one other pair of terminals. As a result of the managed (output) energy could be increased than the controlling (enter) energy, a transistor can amplify a sign. At the moment, some transistors are packaged individually, however many extra are discovered embedded in built-in circuit

Determine :Image of Transisitor. RELAY: A relay is an electrically operated change. Many relays use an electromagnet to function a switching mechanism mechanically, however different working ideas are additionally used. Relays are used the place it's needed to regulate a circuit by a low-power sign (with full electrical isolation between management and managed circuits), or the place a number of circuits should be managed by one sign. The primary relays have been utilized in lengthy distance telegraph circuits, repeating the sign coming in from one circuit and re-transmitting it to a different.

Relays have been used extensively in phone exchanges and early computer systems to carry out logical operations. Determine: Image of Relay Site visitors gentle is saved by the Pest Repellent: Issues you'll need• IC 555 – 1 no. • Resistors- R1 – 470k- R2 – 100 ohms, – R3 – 100 ohms, – R4, R5 – 1k, R6 – 47 ohms, • LED – 1 no, Capacitors, • Speaker – 1 no, – C1 – 10 ? F / 25V (Electrolytic), – C2 – 1000 ? F / 25V (Digital), – C3 – Zero. 01 ? F (Ceramic), Battery, • Speaker – 1 no, – 9V and battery snap (1 no. ), • LED – 1 no, • Speaker – 1 no, • Soldering iron and alloy.

The ultrasonic pest repellent gadget obtainable in the marketplace however a serious downside is that their energy output is low and their effectiveness suffers. This digital pest repellent generates highly effective ultrasonic indicators to repel pests. That’s purpose we will shield our site visitors gentle by this gadget. In summer time season, pest is attracted by gentle at night time. That’s purpose lights are unable to by means of their full focus. That’s purpose we add pest repellent with Site visitors Mild. Benefit of Site visitors Mild Controller: The next is from part 4B. three of the Ohio Handbook of Uniform Site visitors Management Gadgets: When correctly used, site visitors management indicators are useful gadgets for the management of vehicular and pedestrian site visitors. They assign the right-of-way to the varied site visitors actions and thereby profoundly affect site visitors move. Site visitors management indicators which can be correctly designed, situated, operated, and maintained could have a number of of the next benefits: A. They supply for the orderly motion of site visitors. B. They improve the traffic-handling capability of the intersection if: 1.

Correct bodily layouts and management measures are used, and a pair of. The sign operational parameters are reviewed and up to date (in wanted) regularly (as engineering judgment determines that important site visitors move and/or land use adjustments have occurred) to maximise the flexibility of the site visitors management sign to fulfill present site visitors calls for. C. They scale back the frequency and severity of sure kinds of crashes, particularly right-angle collisions. D. They're coordinated to supply for steady or practically steady motion of site visitors at a particular pace alongside a given route below favorable circumstances.

E. They're used to interrupt heavy site visitors at intervals to allow different site visitors, vehicular or pedestrian, to cross. Site visitors management indicators are sometimes thought-about a panacea for all site visitors issues at intersections. This perception has led to site visitors management indicators being put in at many places the place they aren't wanted, adversely affecting the protection and effectivity of vehicular, bicycle, and pedestrian site visitors. Site visitors management indicators, even when justified by site visitors and roadway circumstances, could be ill-designed, ineffectively positioned, improperly operated, or poorly maintained.

Improper or unjustified site visitors management indicators may end up in a number of of the next disadvantages: A. Extreme delay; B. Extreme disobedience of the sign indications;  C. Elevated use of much less ample routes as street customers try and keep away from the site visitors management indicators; and  D. Important will increase within the frequency of collisions (particularly rear-end collisions). CONCLUSION: Typically the District is contacted by residents that imagine that site visitors sign have many benefits and no disadvantages. Whereas site visitors indicators will help

Automatic Room Light Controller Essay

This Undertaking “Computerized Room Gentle Controller with Customer Counter utilizing Microcontroller” is a dependable circuit that takes over the duty of controlling the room lights as effectively us counting variety of individuals/ guests within the room very precisely. When any individual enters into the room then the counter is incremented by one and the sunshine within the room shall be switched ON and when anybody leaves the room then the counter is decremented by one. The sunshine shall be solely switched OFF till all of the individuals within the room exit.

The full variety of individuals contained in the room can be displayed on the seven section shows. The microcontroller does the above job. It receives the alerts from the sensors, and this sign is operated underneath the management of software program which is saved in ROM. Microcontroller AT89S52 repeatedly monitor the Infrared Receivers, When any object move by way of the IR Receiver’s then the IR Rays falling on the receivers are obstructed this obstruction is sensed by the Microcontroller.


Voltage Regulator 7805 . Diode IN 4007 three. Relay four. IR Tx/Rx Pair 5. 7 Phase Show 6. optical fiber cable Description of Microcontroller: 89s52: The AT89S52 is a low-power, high-performance CMOS Eight-bit microcontroller with 8K bytes of in-system programmable Flash reminiscence. The system is manufactured utilizing Atmel’s high-density nonvolatile reminiscence expertise and is appropriate with the industry-standard 80C51 instruction set and pinout. The on-chip Flash permits this system reminiscence to be reprogrammed in-system or by a standard nonvolatile reminiscence programmer.

By combining a flexible Eight-bit CPU with in-system programmable Flash on a monolithic chip, the Atmel’s AT89S52 is a strong microcontroller which supplies a highly-flexible and cost-effective resolution to many embedded management purposes. The AT89S52 supplies the next commonplace options: 8K bytes of Flash, 256 bytes of RAM, 32 I/O traces, Watchdog timer, two information pointers, three 16-bit timer/counters, a six-vector two-level interrupt structure, a full duplex serial port, on-chip oscillator, and clock circuitry.

As well as, the AT89S52 is designed with static logic for operation right down to zero frequency and helps two software program selectable energy saving modes. The Idle Mode stops the CPU whereas permitting the RAM, timer/counters, serial port, and interrupt system to proceed functioning. The Energy-down mode saves the RAM con-tents however freezes the oscillator, disabling all different chip features till the subsequent interrupt. [pic] The is pushed by a set of program directions, or software program.

As soon as conversant in and software program, the person can then apply the microcontroller to the issues simply. The pin diagram of the 8051 exhibits the entire enter/output pins distinctive to microcontrollers: [pic]The next are among the capabilities of 8051 microcontroller: ? Inner ROM and RAM ? I/O ports with programmable pins ? Timers and counters ? Serial information communication The 8051 structure consists of those particular options: 16 bit PC &information pointer (DPTR) ? Eight bit program standing phrase (PSW) ? Eight bit stack pointer (SP) ? Inner ROM 4k ? Inner RAM of 128 bytes. ? four register banks, every containing Eight registers ? 80 bits of common objective information reminiscence ? 32 enter/output pins organized as 4 Eight bit ports:P0-P3 ? Two 16 bit timer/counters: T0-T1 ? Two exterior and three inside interrupt sources ? Oscillator and clock circuits Functions: • Telecom:

Cell phone system (handset and base station), modems and routers. • Automotive utility: Braking system, monitoring management, Airbag launch system, administration unit and Steer- by- wire programs . • Home utility: Dishwasher, tv, washer, microwave oven, video recorder, safety system, storage door controller, calculator, digital watches, VCRs, digital cameras, distant management, deal with mills. • Robotic: Hearth preventing robotic, automated flooring cleaner, robotic arm .

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