So if we are moving through spiral arms, and it appears our neighbouring stars appear 'relatively' fixed to our position does this mean that all stars in our galaxy move through the spiral arms? Do the spiral arms move w/respect to all the stars like some sorta density wave?
my first commercial pc was Netronics S100 Explorer with 128 bytes - yes bytes onboard RAM. It had 2K Rom boot and simple read/write/dump memory functions. It booted to a 35ASR Teletype w/paper tape punch and reader. It also had audio cassette interface for storage. I also used paper tape for storage. Wrote editor assembler for the onboard 8085 using op codes at first then assembler. Gradually added 2114 (1k by 4) sram chips - so 2 chips per k as needed for editor/assembler and work file. Ended up with 4k Ram on S100 Ram Board!! Completed school assignment on this system and was first to get prof to accept assignment written on home pc. Whoop-de-do!!
my first commercial computer (not my homebuilt wire wrapped 8080) was Netronics 8085 S100 Explorer ('79-'80??). It had 128 bytes - yep 128 bytes 'local' ram and 2k rom os. Booted up to a 35ASR Teletype. Storage was Cassette Tape although I could dump to paper tape on the Teletype (and read back - of course!!). Gradually added 2114 Static (whooo!!) Ram in 1k increments (1k by 4) - so 2 chips = 1k to S100 Sram board. till eventually got 4k ram. Wrote editor/assembler using op codes only at first. Was first student to get an assignment accepted by a prof at York University that was done on a home PC. Whoop-de-do.