The word smart started out as a verb from Old English smeortan "be painful," from W.Gmc. *smert- originally "to bite". This led in late O.E. to the adjective smeart "sharp, severe, stinging". In c.1300 smeart became smart meaning "quick, active, clever", probably from the notion of "cutting" wit with words, etc. The first mention of smart devices, "behaving as though guided by intelligence" (e.g. smart bomb) was made in 1972.
So from 1972 on wards "things" started to become smart and this is how we got smart phones and smartboards. The fact that smartphones are really smart can be seen from the fact that NASA uses android smartphones to power an economical new line of satellites called PhoneSats. And there is no way of knowing which object will turn "smart" next! Smart cupboards? Smart glasses? Smart desks?
As a matter of fact, it turns out that smart desks already exist: NEW TECHNOLOGY PROMISES TO TRANSFORM CHILDREN’S SCHOOL DESKS INTO GIANT TABLET
Could we get some SMART CHILDREN next please? That would make teaching so much easier...