I have been working on a little project where my Arduino Uno sends the IMU sensor's data to the PC via serial (Printing the data on serial monitor. I ma planning the transfer the programmed Arduino chip (Atmega) from the prototype platform to a PCB. I have read that I just need a crystal and a couple of capacitor to run the already programmed Arduino chip on a PCB. And I could use the prototype platform to program the chip and transfer back o the PCB.
My question here, can the Arduino on the PCB still perform the serial communication with the PC? Does the PCB need extra components such as a USB-to-Serial converter in order to perform the serial communication? Please explain.