windows use Xshell software, ubuntu using minicom.
You need to buy a converter module with TTL USB to serial port, similar to this stuff.
Then, give the computer to upload a corresponding drive, corresponding to remember, such as the above is PL2303TA, you have to go to the package driving PL2303TA.
After Bahrain, according to the line sequence defined in Figure: black: the GND, green: the TXD, white: the RXD serial port to the corresponding pin plug into the development board, the red line can not be inserted, is only a 5V power supply. USB plug computer.
Windows：
Look at your Windows COM port is a few (see my computer's Device Manager, previously written microcontroller should know What do you mean), do not understand Baidu "Windows COM View occupy."
According to this configuration and then go to your Xshell, remember to select the serial mode serial.
ubuntu：
If in ubuntu, direct installation minicom, have online configuration process. minicom only with a good terminal commands transmitted on the line, minicom also functions as file transfer, but the configuration up a little trouble, the file transfer can be a blog after me in, it will be introduced to ways to achieve shared folders with network port and nfs transmission .
Suggest:
There is a good proposal, is found embedded stuff, you can add the question "Raspberry Pi" keyword, even if you are not using raspberry pie, online information about the Raspberry Pi is still a lot of.