5,985 karma · joined April 28, 2008
[ my public key: https://keybase.io/adh; my proof: https://keybase.io/adh/sigs/-nlOT3TEcphUI1F_WEG_MzCvPXi5fQ6Z5oZaDLQGuVw ]
From the perspective of network design, the fact that this certainly is not exhaustive list of places where SpaceX has physical DC presence and physical reality it comes that some of these datacenters are selected based on the fact that the ground station is somewhere nearby (I would be surprised if there is even just one place on the list where nearby means "on the roof", because there is a lot of technical, logistical and administrative reasons why you do not want to put such a thing at a roof of a datacenter).
On the other hand I have heard of some success stories about using SunRays as RDP clients, which is actually supported configuration (you still need a Solaris box that manages the sunrays and translates RDP to ALP).
But there are two somewhat significant issues with the radio layer in this application: the geometry of tag antenna is somewhat critical (making it into a band would be problematic) and the back scatter is attenuated by salt water blobs (ie. people) almost perfectly.
Interestingly, the speaker part and the keyboard part are completely separate. The "cable" consists of four separate cables (keyboard, power, line out, mic in) in a thin sleeve. Mine was supplied with AT plug on the keyboard cable and Y-adapter that converted PS2 into AT DIN and barell jack for the speaker power. The keyboard label indeed says it is powered by 9V DC, but I guess that never really happened as PS/2 is 5V no matter what various devices say.
Edit: And as for the supper hard to find nowadays part: I suspect that part of the reason is that the keyboard module inside the thing is ridiculously sensitive to even minor spills.
One thing is 120bit RSA (readily broken with a graphing calculator at the time of release), another thing is the provenance of the RSA implementation code in the original binary.
Not only it can, but both CL and Emacs Lisp actually defines primitives with names that start with digit.
In the railway signalling industry (which for historically obvious reasons is obsessed with reliability) there even is a pattern of running different software implementing the same specification, written by different team, running on a different RTOS and different CPU architecture.
Smalltalk does have standard text source file format, but that format is best described as human-readable, not human-writable. The format is essentially a sequence of text blocks that represent operations done to the image in order to modify it to a particular state interspersed with "data" (mostly method source code, but the format can store arbitrary stuff as the data blocks).
One exception to this is GNU Smalltalk which is meant to be used with source files and to that end uses its own more sane source file syntax.
While that is often neat solution, do not do that by simply XORing the numbers with constant. Use a block cipher in ECB mode (If you want the ID to be short then something like NSA's Speck comes handy here as it can be instantiated with 32 or 48 bit block).
And do not even think about using RC4 for that (I've seen that multiple times), because that is completely equivalent to XORing with constant.