Gordon Bell computer books on-line

Hi, I've just come across a site that has on-line copies of several of Gordon Bell's (with others) books on computer architecture, etc. (My apologies if I'm repeating something, I don't recall seeing this posted here recently though). A menu leading to the books is located at the following site: http://beta.ul.cs.cmu.edu/webRoot/Books/Saving_Bell_Books/ The books that are available at this URL are: Computer Engineering Computer Structures: Readings and Examples Designing Computers and Digital Systems High Tech Ventures I was particularly interested in seeing the Computer Structures: book, as it had been previously noted here on the list that there was coverage of the HP9100 calculator. It turns out that the chapter in Bell's book is taken verbatim (with credit) from the HP Journal article that describes the HP9100, so there isn't any additional info. or analysis on the 9100 by Bell. There is a description of the Olivetti Programma 101 calculator/ computer in the same chapter though. And, of course, descriptions of many, many other early computer architectures. Enjoy! Alex Calculator History & Technology Archive Web Page http://aknight.home.mindspring.com/calc.htm