user52259: I am using fingerprint module r307 and LCD together. In that, I am using 2,3 digital pins of arduino for data transfer to the fingerprint.(I tried other pin configurations for this but it didn't work) But as I am connecting LCD, it also requires same 2,3 digital pins of arduino and it is not possible for me to use 2 and 3 pins of Arduino for both lcd and fingerprint sensor for data transfer. Can you please suggest an alternative to this. Can we use analog pins of arduino as digital ones and if so the how?? PLEASE HELP... Thank you!!

user4143: 
Can we use analog pins of arduino as digital ones and if so the how?? 

Yes. You just treat them the same as any other digital pin.  On an Arduino all pins are digital. It's just that some have additional functionality, like analog input, or PWM, or serial, or SPI, etc.

52259: <p>I am using fingerprint module r307 and LCD together. In that, I am using 2,3 digital pins of arduino for data transfer to the fingerprint.(I tried other pin configurations for this but it didn't work) But as I am connecting LCD, it also requires same 2,3 digital pins of arduino and it is not possible for me to use 2 and 3 pins of Arduino for both lcd and fingerprint sensor for data transfer. Can you please suggest an alternative to this. Can we use analog pins of arduino as digital ones and if so the how?? PLEASE HELP... Thank you!!</p>
 4143: <blockquote>
  <p>Can we use analog pins of arduino as digital ones and if so the how?? </p>
</blockquote>

<p>Yes. You just treat them the same as any other digital pin.  On an Arduino all pins are digital. It's just that some have <em>additional</em> functionality, like analog input, or PWM, or serial, or SPI, etc.</p>
