mortalis

The Pre button toggles the preformatted style on the selected text or the current line (applies <code><pre></code> tag to blocks). 
The Code button toggles the code style on the selected text or the current word (applies <code><code></code> tag to inline elements).
The default shortcuts for the buttons are:
<ul>
<li>Ctrl+Q – Pre</li>
<li>Ctrl+D – Code</li>
</ul>
In the admin Settings submenu it’s possible to change these shortcuts. 
Press a key combination in the text fields with the Ctrl key included and the text will be filled automatically. Or you can type it manually.
Some combinations may conflict with the default editor or browser shortcuts. 
So check them on your instance.
You may use these types of shortcuts:
<ul>
<li><code>Ctrl+B, .., Z (except AXCV)</code></li>
<li><code>Ctrl+0, .., 9</code></li>
<li><code>Ctrl+[symbols] (-=`[];'\/,.)</code></li>
<li><code>Ctrl+F1, .., F12</code></li>
<li><code>Ctrl+Pad0, .., Pad9</code></li>
<li><code>Ctrl+Pad/, Pad*, Pad+, Pad.</code></li>
<li><code>Ctrl+Shift+...</code></li>
<li><code>Ctrl+Alt+...</code></li>
<li><code>Ctrl+Shift+Alt+...</code></li>
</ul>
This plugin GitHub repository: https://github.com/mortalis13/tinymce-code-formatting.

TinyMCE Code Formatting

Nice and clean made plugin. Thank you!

Adds the Pre and Code buttons to the TinyMCE toolbar with customizable shortcuts

Provides you a shortcut from blog to admin interface without putting any disturbing link in your page. It enables you to type specified text when you’re in your blog (and not any input field in page), then magically go to admin interface.

Keys to Admin

Provides you a shortcut from blog to admin interface without putting any disturbing link in your page.

TinyMCE Code Formatting vs Keys to Admin