if any one hav a working softwere for volt and amp.meter bulid with any 89c51 or 89c2051 etc.MICU pls. share it
what is the sech. for adc
Thanks advance.
"how much ammperage can i put to the port pin."
The word is "current", and it will be specified in the Datasheet
"and how much volterge can i pot to to port pin?"
The word is "voltage", and it will also be specified in the Datasheet
"how can i use the resister"
The word is "resistor", and this is a basic application of Ohm's law.
"and is 1mf good"
It has no meaning in relation to a resistor!
If you mean 1mF or 1uF, that is 1 millifarad or one microfarad - which are measures of capacitance, not resistance
"how can i read ammperege and voltergd in float?"
You cannot do it directly - especially as you don't even seem to have understood the basic measurement principles yet!
You will need to use an Analogue-to-Digital Converter (or A/D Converter or ADC), with suitable input conditioning, and suitable code to handle its digital output.
"do i use more pins?"
You mean like using more question marks??????????
"the price of ICL7107 is higher then AT89C51."
But an AT89C51 cannot directly do what you require - only after you have put in a significant amount of work to make it do so!
If you can't and/or won't do the work yourself, then you have to pay for someone else to do it for you - eg, by buying a more expensive part that is ready-made for the application!
That's life.
i dinot want the lunch!!!!!!
his atertude is very bad and their is no manners!!!!
i read this and saw you,,,,
"you can take the camel to water but you can not stop the stink!"
and what does that matter?
the issue of price is: the price of an ICL7107 vs the proce of an AT89C51 PLUS an A/D PLUS other external circuitry
Erik