[Q] [Beginner] About measures

Greetings, everyone.

As I'm relatively new in the typography world, i'm in need of help to understand some basic concepts about measures and, i guess, the methods some softwares use to display typefaces.

The tools i'm using are Inkscape and Fontforge.

To the problem.

I'm able to draw the characters in Inkscape and importing them successfully inside Fontforge to create fonts, that perfectly install, however, they are displayed "blurred" inside the softwares i tested them in. The problem arise because i'm trying to build what is commonly reffered to as a bitmap or pixel font, and, because i tested other fonts of the same style, i know they don't usually come with this behaviour. Is this related to the measures of the characters or to anti-alias?

I attached a project with four characters ( 8, A, g, i) 
http://s000.tinyupload.com/?file_id=53685718602435244159

Would anyone be gentle enough to provide an explanation?