Gordon McKay Professor of Computer Science, Harvard University.
Free lecture videos
The recorded lectures are from the Harvard Faculty of Arts and Sciences course Quantitative Reasoning 48, which was offered as an online course at the Extension School.
The Quicktime and MP3 formats are available for download, or you can play the Flash version directly. These lectures are organized by 12 themes, which can be viewed in any order. Note that some topics are repeated in different themes, as relevant.
Blog posts
Harry Lewis provides commentary and analysis on his blog, Blown to Bits. Blog posts are linked below with the videos.
Radio and television
Video
- Low level bits
- Error correction
- Hamming codes
- Shannon channel coding
- Representing analog information digitally
- Fourier transform
- Digitizing sound
- Electromagnetic spectrum
- Transmitting information at different frequencies
- What is modulation?
- Signals and noise
- Decibels
- Transmitting a signal
- Bandwidth
- Shannon and channel capacity
- How mobile phones started
Enroll in Harvard Extension School courses
If you enjoyed this free class, the Harvard Extension School offers a wide variety of courses in numerous fields. Search for classes and enroll for credit during the fall and spring registration periods.