![LCD And Its Interfacing
A Liquid Crystal Display is a thin, flat panel used for
electronically displaying information such as text,
images, and moving pictures. Its uses include
monitors for computers ,televisions, instrument
panels.
Very compact and light.
Low power consumption. ]
Very little heat emitted during operation, due to low
power consumption.
No geometric distortion.
The possible ability to have little or no flicker
depending on backlight technology.](https://image.slidesharecdn.com/h-160610202758/85/8051-microcontroller-15-320.jpg)
8051 microcontroller
- 2. Presentation’s Index Introduction Features AT89C51 Microcontroller Software Used Led And Its Interfacing 7 Segment And Its Interfacing LCD And Its Interfacing Project Undergone Traffic light
- 3. INTRODUCTION Microcontroller is a small (micro) single-chip computer designed to perform a specific function, and the specific function is to control (controller) objects, processes or events. It is dedicated to one task, or a set of closely related task. It is similar to a personal computer, it has similar components built on to a single chip: CPU, Memory (ROM and RAM) I/O ports, Serial ports Timer
- 4. MICRO CONTROLLER HAS... CPU (Micro Processor) RAM ROM Ports Timer BUS Serial Port ADC CPU :Processing Module RAM :For storing DATA ROM :For storing the application program Ports :For interfacing with the outside world Timer :Allows the MCU to perform tasks for certain time periods ADC :Allows the MCU to accept analogue input data for processing
- 5. Task-specific. Add computer power to a device to enable to perform more, better at a low cost Low cost, small packaging,low power requirement. Ideal for applications in which cost, power and space are crucial. Easy integration with circuits Programmable and re programmable. Lots of inbuilt I/O capabilities. WHY MICROCONTROLLERS ?
- 6. FEATURES 128 Bytes of RAM is avaible It has 4 KB ROM The memory can be Extended up to 64 KB It works on the Von Neumann Architecture The frequency and time of the program is 921.6 KHz and 1.085 μsec Resp. It uses Complex Instruction Set Computer (CISC) Power required for operating is +5 V It no of bits per second is called Bovd rate i.e. 9600 It has dual inline packaging
- 9. Software Required Keil is a compiler that offers evaluation package that will allow the assembly and debugging of files 2K or less Protetus has following features Interactive peripheral models for displays,keypads etc are available Over 8000 anakogue and digital device models are present Extensive single step debugging facilities including system wide diagnostics . It works with popular comilers and assemblers.
- 11. Led And Its Interfacing A light-emitting diode (LED) is a two- lead semiconductor light source. It is a basic pn-junction diode, which emits light when activated. It is a passive component. It is first developed in 1968
- 13. 7 Segment And Its Interfacing A seven-segment display (SSD), or seven- segment indicator, is a form of electronic display device for displaying decimal numerals that is an alternative to the more complex dot matrix displays. Seven-segment displays are widely used in digital clocks, electronic meters, basic calculators, and other electronic devices that display numerical information.
- 14. Design
- 15. LCD And Its Interfacing A Liquid Crystal Display is a thin, flat panel used for electronically displaying information such as text, images, and moving pictures. Its uses include monitors for computers ,televisions, instrument panels. Very compact and light. Low power consumption. ] Very little heat emitted during operation, due to low power consumption. No geometric distortion. The possible ability to have little or no flicker depending on backlight technology.
- 17. TRAFFIC LIGHT Importance Main Modulus of Traffic Light Microcontroller 7 Segment Display Light Emitting Diode(LED) Crystal Oscillator Capacitors Push Button
- 21. TRAFFIC LIGHT Automatic Mode: - It accepts the feedback from the roadside pressure sensors and allows the lane with maximum traffic length first and then returns back to the normal traffic routine but without breaking the previous flow of the routine. If the 2 sensors send the interrupt simultaneously the buzzer is blown seeking a human attention. Semi Mode: - In this mode the controller masking the sensors mechanism follows a normal traffic routine until its gets the command from the remote computer that which lane needs a help routine. After executing the help routine it follows the normal traffic routine but without breaking the previous flow of the routine. This functions is worthy in case of an ambulance or allowing a V.V.I.P passage Manual Mode: - This mode resembles as if a traffic policeman is standing there all lights will be red until controller receives a command serially which lane is allowed to go and its follows that order until it gets further command from the remote computer. This function is worthy in case of an ambulance, or allowing a V.V.I.P passage.