supply of microcontroller lab equipments - 2 8051 microcontroller trainer kit n ( led versition ) n 89c52 micro controller, 12 mhz with 8279 based display / keyboard n 8 function keys, 16 hex keys and 6 digits seven segment display n 3 nos. of 8 bit ports for the user ( 8255 ) in the expansion connector n 8 bit bar graph led display, 8 bit dip switch input n timer 0 pulse input push switch and int 0 input push switch n port 1 pin outs and to use port 1 using 4 switches and 4 leds n serial facility and windows based software to download hex file from pc to kit n 8 k ram and 16k rom expansion socket n necessary data lines, address lines and control lines in the expansion connector n built in power supply, casing to keep the kit safe and detailed manual nprinted circuit board ( pcb ) size : 275x190 n 3 digital i / o interface board n 8 nos. of high quality toggle switches and n 8 nos. of leds. n input devices ldr, reed relay, push n button and opto interrupter n output devices relay, opto coupler, n piezo buzzer and speaker n printed circuit board ( pcb ) size : n 160x100 n n 4 matrix keyboard interface board n- 4 x 4 matrix 16 key keyboard n- 1 seven segment display n- printed circuit board ( pcb ) size : 160x100 5 seven segment led display interface board n4 junction road, 4 set of red, green and yellow leds n pedestrian crossings bi-colour leds, control switch to control day and night operations n printed circuit board ( pcb ) size : 160x100 6 traffic light controller interface board n 4 junction road, 4 set of red, green and yellow leds n pedestrian crossings bi-colour leds, control switch to control day and night operations n printed circuit board ( pcb ) size : 160x100 7 8 bit adc interfaces board n- thermistor lm 35 input in one channel n- 0-5v variable input in another channel n- 8 leds to view the digital output, n- necessary control signals for adc 0809 n- leds for measuring the temperature in binary n- printed circuit board ( pcb ) size : 160x100 8 8 bit dac interface board n one channel dac output 0-10v n 8 bit input from the controller n 8 leds to view the 8 bit dac input in binary n external power supply ±12v or 15v needed n printed circuit board ( pcb ) size : 160x100 n 9 stepper motor control interface board n- stepper motor driver circuit n- small unipolar stepper motor to be operated at +5v dc n- push switch for step input, toggle switches for direction and speed n- printed circuit board ( pcb ) size : 160x100 n 10 dc motor control interface board n- speed control circuit using pwm technique n- small dc motor to be operated at +5v dc n- 2 nos. of thumb wheel switches input for duty cycle n- h bridge driver ic for driving dc motor n- control switches to give control inputs ( direction and speed ) n- printed circuit board ( pcb ) size : 160x100 n 11 sending data through serial port between controller kits n rs232 cable double ended with kit to kit connections n