If you type Unicode in Nikosh font, you must have Nikosh font will be install on your computer or laptop. So, you can download this font from the link below and install it according to instruction here; After download this font, you will be extract from zip file to a specified folder. Then open this folder and select all font, click the right button on mouse and click to install. Sometime wait and enjoy.
Avro Keyboard Bangla Software with full support for Unicode
With Avro Keyboard Bangla Software you will be able to type in Bangla language using your standard keyboard. The program has a simple interface that comes under the form of a toolbar. From there you can launch any of the available tools, switch the input language between English and Bangla, choose between the provided Bangla layouts and much more.