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PostPosted: Sun Sep 13, 2020 5:47 pm 

Joined: Fri Mar 02, 2018 6:53 pm
Posts: 22
Not exactly sure yet - If the load being prepped right now has a good return,
these boards may stay in the personal scrap box for recess time on the playground.

All 3 boards from the mid to late 80's.

#1) Pics 6979/6980 How would this grade? Hi Telco

#2) Pics 6981/6982 Hi Telco or Better possibly???
on the right side(pins were never there)
upper left corner(plastic was removed to expose pins. Nothing removed)

#3) Pics 6983/84/86 Dated to 1987--Gold Capped Gold legged inmos chip.
High Grade Telco???

Thanks


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DSCN6986.JPG
DSCN6986.JPG [ 1.84 MiB | Viewed 196 times ]

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PostPosted: Fri Sep 18, 2020 2:09 pm 
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Joined: Tue Feb 03, 2015 6:57 pm
Posts: 7826
Location: Low DOS
Looks like 300 series equipment.
The 200 and 300 series of systems from IBM and compatible equipment from HP, Leading Edge, and DEC include mini/microcomputers, and specialised peripherals like network printers, cash registers, access and fire control, etc.
The mighty beast of minimalist functions.

Gold cap boards are gold cap chip board. Others are high telco.
These don’t come up often. A surprisingly large numbe of them are still working in their original homes in high rise/skyscraper basements. Running water pumps, electricity, elevators...
lots of large offices use them still too. Along with Apple’s servers... they just work and keep working. Walmart and most good will stores use them for their POS/POP/POR system. Albertsons’ for their non-self-checkout registers.
Most medical office buildings have IBM or DEC 2/60 or 320 systems for the fire and access system.

think about that the next time you hop on an elevator or escalator in some old building. The computer controlling it is probably from the 80s, or older.
;)

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