Computer Studies: The ICL Computers Education In Schools (CES) project.  Some good CESIL links in the comments. CESIL in AWK,  GPL licensed, posted by author on rasberry pi forum. or

and: vintage BASIC including the source to the games for “BASIC computer games” by


Mindstorms-Children-Computers-Powerful-Ideas   Worth reading the reviews aswell

ICL  International Computers Limited: All about the 1900 series mainframe computer


Projects: Build your own computer. Many good people – many good computers to build. Group formally known as N8VEM.