Use courier and newtxtext together

I want to use two different monospaced fonts in one and the same document.

However, when I write \texttt{The quick brown fox jumps over the lazy dog} using \usepackage{courier}, I can get figure 2 but cannot get figure 1.

In contrast, when I write \texttt{The quick brown fox jumps over the lazy dog} using \usepackage{newtxtext}, I can get figure 1 but cannot get figure 2.

So, how to generate the two figures in the same article?

Figure 1:

Figure 2:

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Just to clarify: You want to be able to use two different monospaced fonts in one and the same document? –  Mico May 11 at 5:27
@Mico Yes, thanks for the clear description. –  Lijie Xu May 11 at 5:44

Here it is, although it's not really clear why you want this:

\documentclass{article}
\usepackage{newtxtext}

\DeclareRobustCommand\crfamily{\fontfamily{pcr}\selectfont}
\DeclareTextFontCommand{\textcr}{\crfamily}

\begin{document}

\texttt{The quick brown fox jumps over the lazy dog}

\textcr{The quick brown fox jumps over the lazy dog}

\end{document}


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