Books like Digital Fundamentals
Thomas L. Floyd
Digital Fundamentals is 828 pages, about 15 hours 11 minutes at 250 words a minute.
7 books to read next
How long each takes
Digital Electronics 6.3 h 
Digital Systems 15.2 h 
Theory and Application of Digital Signal Processing 16.7 h 
Digital Design 9.5 h 
Digital Design 17.2 h 
Introduction to VLSI Systems 16.8 h 
Advanced Digital Design with the Verilog HDL 18.0 h Bar height shows length. Estimated at 250 words a minute.