How measurement intensity light?

Please!
I have one question

How measurement intensity light?

I have LM339 , Cds cell and several resistors

I need converter intensity light Analog to Digital


regards

check its datasheet.. you will get info on how to calibrate it.

Second.. use any high resolution analog to digital converter to change the analog o/p of sensor to digital o/p and later calibrate it.

Thank you very much

I get on ADC0804LCN



what are ports from 11 to 18, they are Digital?(take 1,0)

thank again

hi moon,
yes, the pins 11 to 18 of ADC0804 are indeed digital and are the parallel data lines of the ADC interface to the uC.Before u go any further with ur project, I would strongly suggest u go through the tutorial about ADC interfacing with uC on this site having link as below
http://www.8051projects.net/adc-interfacing/adc0804-interfacing.php
also refer to the ADC datasheet and i think a lot of ur doubts would be cleared.
Good luck.

Dear pdi33,

Thanks for more information

I have question


I sorry for many question


What are Pin (1,2,3,5)?

i need more information, please!

hi moon

i think pdi33 has already answered your queries here:

also refer to the ADC datasheet and i think a lot of ur doubts would be cleared.

Arun

I sorry , i read Datasheet

but not clear for my

thanks for help me

Pin 1 is chip select, when you make this pin low ADC becomes active.

Pin 2 is for read signal, making this pin low you can read the data latched on data pins of ADC.

Pin 3 is for write signal also called start of conversion signal. when we make this pin low, ADC starts conversion.

Pin 5 is INTR (interrupt) signal or end of conversion. its an o/p signal from ADC, when this pin is low it means conversion is over and we can read the data.

Please check datasheet for more details.