\textbf does not work with cmvtt style

Question

I am using

\renewcommand*\ttdefault{cmvtt} \renewcommand*\familydefault{\ttdefault}

in order to get typewriting style. However, I notice that, \textbf does not work? There is no error or warning. I just see that the font of the text is still the same without any changing.

Any help please?

Answer 1

The Latin Modern fonts (kind of successor of the Computer Modern fonts) have bold variants for the type writer families:

\documentclass{article}

\usepackage[variablett]{lmodern}% use lmvtt instead of lmtt for \ttfamily
\renewcommand*{\familydefault}{\ttdefault}

\begin{document}
Lorem \textbf{ipsum} \textsl{dolor} \textbf{\textsl{sit}} amur.
\end{document}