An introductory book that visually teaches the basics of logic circuits. - Title: Visual Introduction to Logic Circuits - Author: Yuji Izawa - Publisher: Pleiades Publishing - Condition: Cover has stains Thank you for viewing. I purchased this at university but didn't use it much, so I'm selling it. There is some writing in light blue marker at the beginning of the text. There are stains like in photos 3 and 4. I think it's coffee. If you don't need the cover, I can remove it and ship it, so please let me know. I hope to sell this at a low price to those who don't mind these stains on a used item. Thank you.