Drag left or right anywhere on the ruler to change the device. Use the arrow keys to move one device, or Home and End to reach either end.

Dates & sources

Release dates where known; announcements are marked. Some sources give only a month or year. Each image represents a named model or edition. Images are generated interpretations, not exact photographs. Order-opening dates are marked separately from deliveries.

The ruler gives each device one stop, in date order. Its spacing does not measure elapsed time.