> For those not close to the PDP family, the numbers don't really mean anything. The 11 is not better than the 10 in any way, they are just the order in which t

> For those not close to the PDP family, the numbers don't really mean anything. The 11 is not better than the 10 in any way, they are just the order in which they were released. Roughly speaking true but not exactly. The PDP-12 and the PDP-14 were both released in 1969 whereas the PDP-11 wasn’t released until 1970. Also, both the PDP-11 and the PDP-15 were released in 1970, but I’m not sure which was released first. Even if it so happens the PDP-11 came out earlier in 1970 than the PDP-15 did, that fact is irrelevant to their numbering.