temperature logging system

hi ajay,
im working on data logger project. first im working at proteus .
i cant find simulation model for adc0848 on proteus7.i need it badly.
plz tell me what to do where to find it

you can try out with a similar kind of ADC, as this model is not there for simulation. see what properties are there in ADC0848 find a similar one with simulation model in proteus and at least finish your project

thankx for ur reply.
i have done it using adc0808.

hi rickey,
im facing problem with adc0808 on proteus.it is not giving correct reading.actually i consulted mazide book.
according to Mazide when we apply VREF= 2.56v and vin=0-->2.56v then the step size is 10mv.
it means when i give analog signal of .26v as vin number of steps shown should be 26 but adc0808 is showing 88 steps
can u plz help me solving this problem.also i have reinstalled proteus but the same thing happening.plz help me Cry Cry

can you show me the circuit that you've made? i want to see the circuit arrangement.
As far as you told me, it must show 26 steps. rest i can only tell when i see your circuit.

here are the files

ajay i have solved the problem
i was making a big mistake
!dance !dance !dance !dance !dance !dance !dance !dance !dance

I checked your cirucit, its perfectly fine..
then i checked your program.. it has little mistake. The data you are getting from the ADC output will be hex value, so.. you cannot directly send it to the terminal.
for example.. as you said for 260mV i/p the o/p should be 26 steps.. that means the ADC o/p will be 0x1A
so when you convert it to decimal you will get 26. and then display it
have fun programming !dance

but i have solved by changing the circuit
actually OUT1 is the MSB and i was taking it as LSB (very funny na). i didnt changed the program a little bit.
and now reading are perfect
thanks for ur help

lol even i didn't check it..
and i thought you're not changing hex to decimal anyways happy it worked