While programming the ADC0804 IC what steps are followed?a)select the analog channel, start conversion, monitor the conversion, display the digital resultsb)select the analog channel, activate the ALE signal (L to H pulse), start conversion, monitor the conversion, read the digital resultsc)select the analog channel, activate the ALE signal (H to L pulse), start conversion, monitor the conversion, read the digital resultsd)select the channel, start conversion, end the conversionCorrect answer is option 'B'. Can you explain this answer?

Question

Answer

Explanation:

The steps followed while programming the ADC0804 IC are as follows:

1. Select the analog channel: Before starting the conversion process, the desired analog channel needs to be selected. This is done by configuring the address lines of the ADC0804 IC to select the appropriate channel.

2. Activate the ALE signal (L to H pulse): ALE stands for Address Latch Enable. It is a control signal used to latch the address from the address lines into the ADC0804 IC. To activate the ALE signal, it is initially set to a low logic level (L) and then transitioned to a high logic level (H) for a short duration (pulse). This transition latches the address into the ADC0804 IC.

3. Start conversion: Once the address has been latched, the conversion process can be started. This is done by activating the Start signal, which triggers the ADC0804 IC to begin converting the analog input signal into a digital value.

4. Monitor the conversion: While the conversion is in progress, the status of the conversion can be monitored. This involves checking the status of the EOC (End of Conversion) output pin of the ADC0804 IC. When the conversion is complete, the EOC pin will go high, indicating that the digital result is available for reading.

5. Read the digital results: Once the conversion is complete and the EOC pin is high, the digital result can be read from the ADC0804 IC. This is typically done by reading the digital value from the output pins of the ADC0804 IC using a microcontroller or any other digital device.

Summary:
The correct sequence of steps to follow while programming the ADC0804 IC is to first select the analog channel, then activate the ALE signal (L to H pulse), start the conversion, monitor the conversion by checking the EOC pin, and finally read the digital results from the output pins of the ADC0804 IC. Therefore, option 'B' is the correct answer.

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