Chip maker Nvidia has agreed to buy UK based Arm for $40 billion. Arm is a computer chip company that was bought by Japanese conglomerate SoftBank Group four years ago for $32 billion. Arms Holdings provides power to mobile processors for companies such as Apple, Samsung, and Qualcomm. Nvidia has said it will invest heavily to give the combined companies a head start on the next stage of AI computing, an area of growth which is critical for both companies. The deal is crucial