tender for purchase of equipments for ice department (microcontroller practical) => limited; 1 equipments for ice department: 2 8051 micro controller kit - in system programming  89s52 micro controller, 12 mhz, built in 8k flash  8 toggle switches, 8 leds  hex keyboard and 4 nos. of seven segment display  usb based programming port  built in power supply  wooden closed cabinet 3 digital i/o interface board 8 nos. of high-quality toggle switches and 8 nos. of leds. input devices ldr, reed relay, push button and opto interrupter, output devices relay, op to coupler, piezo buzzer and speaker 4 program display string on given 16 x 2 lcd  2 lines and 16 characters lcd  4 x 4 matrix 16 key keyboard 5 8 bit adc interface  8 leds to see the digital output, necessary control  signals for adc 0809 6 8 bit dac interface  dac 0808.  output 0-10v  8 bit input 7 stepper motor control interface board  stepper motor and driver circuit for the stepper motor 8 dc motor control interface board  thumb wheel switch for duty cycle input and h bridge output for driving dc motor