But Upton said he believes the new Raspberry Pi 4 could fuel more sales ... while he worked at the school as a director of studies. He told CNN Business that he had imagined getting a few thousand ...

Raspberry Pi stock soared as much as 40% in early trade before paring those gains slightly by 11.54 a.m. ET to trade at £3.85 ($4.90), still about ... at AJ Bell, told CNN.