Bold typewriter
LaTeX:
\documentclass{article} \DeclareFontShape{OT1}{cmtt}{bx}{n}{ <5><6><7><8><9><10><10.95><12><14.4><17.28><20.74><24.88>cmttb10}{} \begin{document} \texttt{Normal and \textbf{bold Typewriter.}} \end{document}
ConTeXt: Put this in /usr/share/texmf/tex/context/third/type-loc.tex to define the bold typewriter fonts:
\starttypescript [mono] [computer-modern] [size] \definebodyfont [12pt] [tt] [bf=cmbtt10 at 12pt] \definebodyfont [11pt] [tt] [bf=cmbtt10 at 11pt] \definebodyfont [10pt] [tt] [bf=cmbtt10] \definebodyfont [9pt] [tt] [bf=cmbtt9] \definebodyfont [8pt] [tt] [bf=cmbtt8] \stoptypescript
(Note that this is using the more recent cmbtt[8,9,10] family of fonts, rather than the older cmttb10 font used in the LaTeX example.)
Then, the fonts can be accessed as in this example:
\starttext {\tt Normal and \bf bold Typewriter.} \stoptext