1. EMBEDDED SYSTEMS

2. Special purpose system which are used as either standalone or part of big system. An embedded product uses a microprocessor or microcontroller to do task.

3.  Single Function  Complex Functionality :- complex algorithms are used in mobile phones etc.  Full Of Constraints :- limited memory, low cost, low power consumptions.  Real Time Performance :- it completes all its tasks in given time period.  Safety Critical :- aircrafts,lifts, space shuttles, medical instruments.

4. Communications Automotive automatic braking Military applications – Missile guidance systems Industrial applications Robotics

5. A Microcontroller is a complete computer on a single chip optimized to control electronic devices. A Microcontroller consists of RAM/ROM with flash memory on a single chip. It is a type of microprocessor emphasizing self- sufficiency and cost-effectiveness, in contrast to a general purpose microprocessor, the kind used in pc.

6. It is a 40 pin IC known as pic microcontroller and manufactured by MICROCHIP TECHNOLOGY INCORPORATED. It is new generation microcontroller with enhanced features from earlier versions of microcontrollers. PIC family has many microcontrollers and pic18f458 is one them.

7. FEATURES:-  High-Performance RISC CPU.  Advanced Analog Features.  Secondary oscillator clock option.  Linear data memory addressing to 4 Kbytes.  Three external interrupt pins.

9. PROJECT TITLE :- Device Control By Timer. DESCRIPTION:- This project is designed to control the electronic devices by a digital clock. To control a device or to make that device on or off at a desired time interval, we have to set the time in project with help of four buttons provided for interfacing between with user and kit.

10.  PIC16F877A IC  1000uf capacitor  104 ceramic capacitor  8MHz crystal oscillator  7805 voltage regulator  10kohm resistor  1.2kohm resistor  2.2kohm resistor  Male – Female bungi strip

11.  16X2 LCD  soldering iron  soldering wire  desold wire  connecting wire  push buttons  relay 12V  ULN803 IC  DS1307 IC

12. THANK …YOU…......x……x…….x……x………x……..x………x……..x…....