Which computer, the Digi-Comp I or the Acorn Electron, was made as a budget friendly version of the BBC Micro educational/home computer?
Digi-Comp I The Digi-Comp I was a functioning, mechanical digital computer sold in kit form. It was originally manufactured from polystyrene parts by E.S.R., Inc. starting in 1963 and sold as an educational toy for US$4.99.
Sideways address space The "Sideways" address space on the Acorn BBC Microcomputer, Electron and Master-series microcomputer was Acorn's bank switching implementation, providing for permanent system expansion in the days before hard disk drives or even floppy disk drives were commonplace. filing systems, application and utility software and drivers were made available as Sideways ROMs, and extra RAM could be fitted via the Sideways address space.