 Linus Torvalds has attributed his eventually developing the Linux kernel, likewise having pre-emptive multitasking, in part to having owned a Sinclair QL in the 1980s.Because of the lack of support, particularly in Finland, Torvalds became used to writing his own software rather than relying on programs written by others.His frustration with the Sinclair led, years later, to his purchasing a more standard IBM PC compatible on which he would develop Linux.