ATI Technologies Inc. was a semiconductor technology corporation based in Markham, Ontario, Canada, that specialized in the development of graphics processing units and chipsets and was acquired by Advanced Micro Devices (AMD) in 2006. In addition to developing high-end GPUs (originally called a VPU, visual processing unit, by ATI) for PCs and Apple Macs, ATI also designed embedded versions for laptops (Mobility Radeon), PDAs and mobile phones (Imageon), integrated motherboards (Radeon IGP), and others.