Blinking Led

Hello everbody,
I'm the newbie in Arduino Universe.I wanna blink a led on the Mac but I got a error on complier:
How I can fix it?
Please help!

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

Wrong forum!

Install the driver for the USB/Serial-chip on your board.

// Per.

If it is a “Chinese Arduino”-Type Board, this Link might help:

Driver for CH340G CH341G

(This is Windows Point of View, but on the mentioned Link you can find Drivers for Mac, too)