The iMac is Apple desktop computer. They were first announced in 1998 and has changed through six distinctly different forms.
It has gone from the above G4 being egg-shaped to its present design, the seventh generation, a thin, rectangular screen with a retina display and aluminium finish.
As the years have progressed, the iMac has gained more storage and a better display but lost ports, disk drives and the ability for cheaper DIY repairs.