WSM Sprocket, Rear Yamaha 100 - 660 - RSY-005-47

WSM Sprocket, Rear Yamaha 100 - 660 - RSY-005-47

Marsoni

M251S

$32.05

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WSM Sprocket, Rear Yamaha 100 - 660 - RSY-005-47Item#: RSY 005 47 Sprocket, Rear Yamaha 100 660 Note: 47 Tooth Brand: WSM FITMENTS: Make Model Year(s) Yamaha Banshee 350 1989 2006 Yamaha Blaster 200 1988 2006 Yamaha DT 400 1977 1978 Yamaha IT 175 1980 1983 Yamaha IT 200 1984 1986 Yamaha IT 250 1977 1983 Yamaha IT 400 1976 1979 Yamaha IT 465 1981 1982 Yamaha Raptor 660 2001 2005 Yamaha TT 350 1986 1987 Yamaha TT 600 1983 1986 Yamaha TT R 250 1999 2006 Yamaha Warrior 350 1989 2004 Yamaha WR 250 1991

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Disclaimer: I owned the first edition for years and read it a dozen times, mainly for pleasure since it’s not only informative but also just enjoyable to read. I’m a professional software architect and have dozens of textbooks on computer science and engineering so I’ve been around the block. This is the kind of book I would buy all for all my friends (if I had more than a couple) and family members (if they were even slightly into computers, which they aren’t sadly). Petzold does an exceptional job at describing digital logic and guides you through building a conceptual CPU from very first principles. I think his bottom up approach is the way to go and has helped me understand complex topics in an extremely simple way. When I’m not reading fiction, this is my go to bedtime reading. The second edition has about 100 more pages than the first and some content has been completely reworked and it’s great. If you ever had even a passing interest in knowing how computers work at a very fundamental level, get this book!

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Reviewed in the United States on January 31, 2023

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Yura

Lake Worth, US

★★★★★ 4

First programmer?

Format: Paperback

As an ardent reader of the past 1st edition, I was fairly excited to get the latest version. That is, until I encountered the history chapter of the new edition. For one thing, what I do NOT understand in this second edition is the newly added description of August Ada Byron (countless of Lovelace). The author claims it was Babbage who was the first programmer to design the engines, not Ada. I am not trying to start a futile argument here about who has more or fewer contributions, etc. What I am trying to assert here is that it is undisputed that Ada (unless the new evidence arises) left *the very first demonstration* of what this seemingly imaginary machine, which didn't even physically exist, was capable of through her program. Because Babbage designed the engine itself, that doesn't automatically put him in the position of a programmer (despite Babbage being a brilliant engineer/scientist and may have had a simple or detailed program in his mind). However, it was Ada who gave a definite touch to programming concepts that ultimately led to modern-day programming. Ada deserves more recognition than a mere "tutorial writer," and she is certainly entitled to the title she deserves. Other than that, like the previous edition, this book is a must-read for people who are from related/unrelated fields. I always loved the 1st edition, and I would do too with the 2nd. Still, I think history should always be approached with more care, particularly if matters have potential controversies.

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Reviewed in the United States on January 6, 2023

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Ben Fleury

Battle Creek, US

★★★★★ 5

One of the few books worth your time

Format: Paperback

If you want to learn computers, start here. Learning from a historical perspective removes complexity of trying to start with say GPUs - you learn just like computer engineers did, incrementally.

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Reviewed in the United States on April 27, 2026

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Kevin

Port Orchard, US

★★★★★ 5

An absolutely brilliant book

Format: Paperback

This is an amazing book for the right kind of reader. It's a lot like Euclid's Elements but for computers as it leads the reader through designing a computer from first principles and builds to the point of creating software and adding peripherals. It's an amazingly clear but slightly challenging read. I have given this book as a gift many many times. It's an absolute classic in my opinion.

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Reviewed in the United States on March 19, 2025