- https://www.digibarn.com/
- https://www.allitebooks.com/
- www.computerhistory.org/timeline/
- https://www.youtube.com/watch?v=AtqjxyV9t1I
- https://www.youtube.com/watch?v=9a7XQmEBK5Q&spfreload=5
- https://www.youtube.com/watch?v=E5SED8le34o
- https://www.youtube.com/watch?v=04UGopESS6A
- https://www.youtube.com/watch?v=xfJbpCJSpd8
- https://www.youtube.com/watch?v=4iaxOUYalJU
- https://www.youtube.com/watch?v=GjqH3Pl2LgY
- https://www.youtube.com/watch?v=8UyJMiYqvs4
- https://www.allitebooks.com/