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[SOLVED] need a sensor circuit, AD converter and a display circuit

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darrenbkl

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ADC

I want to design a circuit to detect light intensity and display it on a 7-segment LED display.So i need a sensor circuit, AD converter and a display circuit.This shouldn't involve any microprocessor, and just fooling around with TTL IC chip. any idea?THx.
 

Re: ADC

The easiest way to do this is to use a microcontroller. Use ATMega8 chip. It's cheap. And this microcontroller has a built in ADC. You can also use this same chip to run the display. The necessary codes and hardware are simple. You can find them on the internet.
 

Re: ADC

By far, the best way is to use a microcontroller.

However, you can have your ADC (say, an 8 bit model) connected directely to two TTL IC that features a 4-bit input and the outputs drive a 7-segment display.

However, your readout will be hexadecimal.
 

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