I went back to the future at this weekend's Vintage Computer Festival West (back after a 9-year hiatus)
![IBM 5100 Portable Computer : A Comprehensive Guide for Users and Programmer s. in dj by KATZAN, Harry, Jr.: (1977) | John W. Doull, Bookseller (A.B.A.C.) IBM 5100 Portable Computer : A Comprehensive Guide for Users and Programmer s. in dj by KATZAN, Harry, Jr.: (1977) | John W. Doull, Bookseller (A.B.A.C.)](https://pictures.abebooks.com/inventory/386212008.jpg)
IBM 5100 Portable Computer : A Comprehensive Guide for Users and Programmer s. in dj by KATZAN, Harry, Jr.: (1977) | John W. Doull, Bookseller (A.B.A.C.)
![IBM 5100 Executable and Non-executable ROS : International Business Machines Corporation : Free Download, Borrow, and Streaming : Internet Archive IBM 5100 Executable and Non-executable ROS : International Business Machines Corporation : Free Download, Borrow, and Streaming : Internet Archive](https://archive.org/download/ibm_5100_ros/5100.png)
IBM 5100 Executable and Non-executable ROS : International Business Machines Corporation : Free Download, Borrow, and Streaming : Internet Archive
![Photos: Homebrew CPUs, IBM mainframes, amazing replicas, and more from Vintage Computer Festival West XI | TechRepublic Photos: Homebrew CPUs, IBM mainframes, amazing replicas, and more from Vintage Computer Festival West XI | TechRepublic](https://www.techrepublic.com/wp-content/uploads/2016/08/ibm51001.jpg)