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Complete development system for the AT89S51 / AT90S8515 Flash Microcontroller. It has been designed to give designers a quick start for developing, prototyping and testing of various applications. Features : 16 X 2 LCD connector (4-bit interface) Alphanumeric. Four 7 Segment LED display. 4 x 4 Matrix keypad. All Microcontroller I/O Ports easily accessible through pin header connectors. External I2C bus provider for other I2C peripherals. RS-232 Interface to PC. I2C EEPROM using (24CXX). Socket for 40 pin devices. Six pin connector for motor control with stepper motor. Two 12V Relays. I2C Digital to Analog Converter 8 bit resolution using PCF8591. Crystal Frequency : 3.6864 Mhz. Four LEDs. Pulled down Switches. UL2003 Stepper Motor driver. Buzzer. Four Presets. In – System Programming (ISP) facility using external program. Programmed IC to test various function.