Nowadays with the advancement technology, especially in the field of microcontrollers, all the activities of our daily lives have become part of information technology and we find microcontrollers in each application. Therefore, the trend is heading towards microcontroller-based project work. However, in this project work to program the ON / OFF timings different machines the microcontroller interacts with RTC IC. The decisions are then made with the help of the microcontroller and associated software. An embedded system is not a computer system that is primarily used for processing, not a PC or UNIX software system, not a traditional commercial or scientific application. Built-in high-end & amp; integrated lower-end systems. High-end Embedded System - Generally 32, 64 Bit Controllers used with the operating system. Examples Personal digital assistant and mobile phones, etc. Integrated lower-end systems - Generally 8, 16-bit controllers used with a minimum of operating systems and hardware design designed for the specific purpose. Examples Small controllers and devices in our daily lives like Washing Machine, Microwave Ovens, where they are embedded. The microcontrollers are embedded inside some other device so that they can control the characteristics or actions of the project. Another name for a microcontroller is therefore "Embedded Controller". Microcontrollers are dedicated to a task and execute a specific program. The program is stored in ROM (read only memory) and generally does not change. Microcontrollers are usually low-priced devices.