On Thu, Aug 6, 2015 at 10:22 AM, tony duell <a...@p850ug1.demon.co.uk> wrote: > Amazingly there is nothing inside that 16pin DIL package. No silicon chip, no > thick-film resistor > network, nothing. It is just a package with the pins.
Are you sure? They might have gotten a really good deal on house-marked Signetics 25120 chips, with not all of the address lines bonded out.
