It sounds like someone had an abundance of sensors and DRAM and needed a quick way to unload both of them for as little cost as possible. I'm sure they paid an

It sounds like someone had an abundance of sensors and DRAM and needed a quick way to unload both of them for as little cost as possible. I'm sure they paid an engineer as little as possible to design the thing because I can't imagine anyone signing off on that kind of design without being totally constrained by time and given limited freedom of choice of parts.