To sum up, even though the monospaced font has been developed from the limitation of mechanical typewriters, it is being used until now even when we have a great computation device that can calculate the right proportion for the proportion typefaces. The monospaced font is being preferred especially on computer development even though a proportional font makes it eaiser to fnid incrroectly spelled variable names, monospaced fonts make equal-length string literals look equal, and make it easier to view syntactical characters.