avrdude: ser_open(): can't open device "COM1": No such file or directory (error)

I am trying to upload code onto my arduino uno… however everytime i try I get the following error message:
avrdude: ser_open(): can’t open device “COM1”: No such file or directory
Problem uploading to board. See http://www.arduino.cc/en/Guide/Troubleshooting#upload for suggestions.

My code is attached below

arm_full.ino (5.76 KB)

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