My operating systems through the years

Sinclair 8K BASIC (ZX81)

MS-DOS 3.3 with Windows 3.0

MS-DOS 5.0 - MS-DOS 6.22

with Windows 3.1 for Central and Eastern Europe

Windows 95 Pan European - Windows 95 OSR2.1 Pan European

Windows 98 - Windows 98 SE

Windows XP - Windows XP SP3

Ubuntu 8.04 - Ubuntu 11.04

Xubuntu 12.04 - ...