On 2018-Sep-03, at 8:39 AM, jos via cctalk wrote: > the following late fifties HP equipment is available in Switzerland. > Stored in less than ideal conditions, but seem otherwise quite OK. > > Feel free to forward to more fitting mailing list / fora. > > Not my equipment, my only interest in this is saving these from the scrapheap. > > > HEWLETT PACKARD TIME INTERVAL UNIT 526B > HEWLETT PACKARD ELECTRONIC COUNTER 524C > HEWLETT PACKARD DIGITAL RECORDER 560A > > ( Possibly a second HP524(b) , unsure of this ) > > I will forward email adresses tio the seller, up to you to complete. > He expects to raise some money, unsure if realistic or not.
I think I've made this comment before when this type of equipment has been mentioned on the list, but as it's being mentioned again: The 524C is a tube-based NIXIE-display digital frequency/period/event counter, the 526B is a plug-in input module for the 524, and IIRC the 560 is a printing recorder for use with the 524. http://madrona.ca/e/edte/HP524C/index.html http://madrona.ca/e/edte/HP520/index.html In my opinion, it's a reasonable acquisition for a computer museum as an example of tube-based digital technology from which the 1st generation of computers were built (seeing as how tube-based computers are a tad difficult to come by these days). If you're an HP collector, the 520 series was HP's first step into digital technology.