The business of US chip designer and software specialist Nvidia continues to grow explosively thanks to the artificial intelligence boom. Last quarter, turnover was an impressive 262% higher than a year earlier at $26 billion. The share price rose by 5% at times in US after-hours trading on Wednesday. Nvidia also announced a dividend increase and a stock split. With a turnover of $22.6 billion, the data centre technology business was even five times higher than in the same quarter of the previous year. Originally developed for graphics cards, Nvidia’s technologies have long proven their worth …