Before that we’d have had a CRT colour TV, them maybe our parents grew up with a monochrome model. Before those though came the first TVs of all, which were mechanical devices that relied on a ...

Because instead of a CRT and its associated electronics, they featured a spinning disk with a spiral pattern of holes. These mechanical TV systems were quickly superseded in the 1930s by all ...

Meanwhile, in Japan, Kenjiro Takayanagi was developing electronic television, too ... first regularly broadcast programs using Baird's mechanical equipment, though it had been broadcasting ...