I am using TeXstudio to edit Latex and create pdf files. The text is not smooth in the pdf files created by TeXstudio in my computer. When I zoom in, it will be
But if I use my friend's computer to generate the pdf files, it will be like below when I zoom in to see
Both computers have Windows 7 as OS, same Version of TeXstudio. What settings should I change to make the text smooth?
I created two pdf files from same .tex files by TeXstudio in my and my friend's computers. The files can be downloaded in below link