Description

There is a number of popular families of microcontrollers which are used in the different application as per their capability and feasibility to perform the desired task, most common of these are 8051, AVR, PIC.
AVR is a simple programmable chip. It has a CPU, some flash memory, some RAM & some EEPROM, all in one chip. Flash memory is a storage location, like the hard disk of a computer. RAM is a temporary storage just like computer RAM. EEPROM is used long-term storage. Without EEPROM we can’t run a program from flash memory. The EEPROM doesn’t get erased when the chip loses power.

Features

Features & Specification of AVR
7 Segment LED display
4 x 4 KEYBOARD
40 pin ZIF socket
Two RS232 for serial communication
12 V AC/DC adapter
4 input /output PORT
DC Motor interface & controlling
Dual power supply out (12V, 5V)
Manual Reset
LCD( 16 x 2) interface & extension slot
4 Interrupt / Input switches
LED interface (8 LED)
8 MHz for Maximum speed
Analog input PORT
LCD contrast adjuster
ISP head for programming
EEPROM
Regulated power supply