Re: I don't see the purpose of this
"I agree. In an age where we enjoy full colour hi def screens of "retina" quality, dumbing down to 5 x 5 x LED seems unlikely to interest any kids I know. I have a son of the target age, and he just laughed at this."
In which case you did not explain it to him adequately. You may as well argue that Lego and Meccano would never be of interest to kids because you can buy ready-made toys and models that are superior to anything that they could make with those things. You do not try to tell kids that this thing is a "computer" because they will indeed laugh at it. You tell them - or better yet *show* them that the device is something that they can use to make their own things. Not all kids will be interested, just like many kids are uninterested in Meccano. But for those who have the right mindset, writing a simple program that flashes an LED or makes a tone come from a speaker is far more exciting than clicking on an icon and having a full-colour display or the latest pop song magically being produced from a complex box. Because it becomes a personal achievement.
The description of a product leads to a particular mind-set or expectation, and a bad description can break a product. Had Sinclair marketed an advanced electric *bicycle* instead of trying to sell it as a car, it may well not have flopped as badly as it did.