State Machines
Related to regular expressions, Turing tape, and the Halting problem.
State Machines
https://www.youtube.com/watch?v=-Yicg2TTMPs
https://www.youtube.com/watch?v=0z0XGXBtI3A
Regular Expressions:
https://www.youtube.com/watch?v=sa-TUpSx1JA
Turing Machines:
https://www.youtube.com/watch?v=dNRDvLACg5Q
The Halting Problem
https://www.youtube.com/watch?v=macM_MtS_w4