In my classes--and in many other college classes, you are welcome to use an electronic device to type class notes. (Most of us do
not allow voice recording!) I have loved Microsoft's OneNote for years; it may already be on your computer if you run Windows and have one of the Microsoft Office suites.
And for Mac users:
Growly Notes
Growly Notes is free, and it's just as good if not better.
(Thanks to
Lifehacker for the tip.)
And if you have an iPad,
OneNote is available for free from the App Store.