- 22:30, 16 January 2021 diff hist -37 Exercise 2.6Z: Magnitude and Phase
- 22:18, 16 January 2021 diff hist -170 Exercise 2.6: Complex Fourier Series
- 21:57, 16 January 2021 diff hist -37 Exercise 2.6: Complex Fourier Series
- 21:47, 16 January 2021 diff hist -58 Exercise 2.6: Complex Fourier Series
- 21:42, 16 January 2021 diff hist +1 Exercise 2.5Z: Square Wave
- 21:41, 16 January 2021 diff hist -18 Exercise 2.5Z: Square Wave
- 21:31, 16 January 2021 diff hist -27 Exercise 2.5Z: Square Wave
- 21:17, 16 January 2021 diff hist -48 Exercise 2.5Z: Square Wave
- 21:12, 16 January 2021 diff hist -91 Exercise 2.5Z: Square Wave
- 20:51, 16 January 2021 diff hist -39 Exercise 2.5: Half-Wave Rectification
- 20:41, 16 January 2021 diff hist -29 Exercise 2.5: Half-Wave Rectification
- 20:38, 16 January 2021 diff hist -62 Exercise 2.5: Half-Wave Rectification
- 20:21, 16 January 2021 diff hist -29 Exercise 2.4Z: Triangular Function
- 20:15, 16 January 2021 diff hist -96 Exercise 2.4Z: Triangular Function
- 20:07, 16 January 2021 diff hist -68 Exercise 2.4Z: Triangular Function
- 00:21, 14 January 2021 diff hist +7 Exercise 2.4: Rectified Cosine
- 00:16, 14 January 2021 diff hist -11 Exercise 2.4: Rectified Cosine
- 23:55, 13 January 2021 diff hist -75 Exercise 2.4: Rectified Cosine
- 23:49, 13 January 2021 diff hist -77 Exercise 2.4: Rectified Cosine
- 23:38, 13 January 2021 diff hist +2 Exercise 2.4: Rectified Cosine