Looking for a book

Question

Books

Hello, I read a book for a long time (I don’t remember either the author or the title), only one thing, it talked about computer architecture, described an elementary apparatus for finding the difference / sum on the lamps. I also remember one moment in the book, the author described how in childhood they communicated with a friend with a flashlight through the windows.

Does anyone remember this book? Or similar, I need on this topic + the study of binary operations with tasks.
Thank you.

Answer 1

"Code" Petzold?