MICROFORUM

if you replace half of HP-85 with newly developed electronics, then Yes.

I can supply more used 68030 various frequency, but all PGA. All removed from vintage systems.
As I know, the QFP-versions are available mostly in China or via Chinese resellers in EU. They could be modern China-fakes.

i have only 4 pcs, I can post from France. Note, on eBay are many available.

The solution is easy. You need to convert 7-segment-code either to BCD or to decade-code. If you convert the 7-segment code to decade code, you drive nixie directly. If you convert 7-segment code to BCD code, you need change voltage level from 12V to TTL with a resistor divider and use 74141 nixie d...

I have also MM5316, new unused, old stock. Ready for sale.

First, you need to specify what you need - functions, frequency range ... In the past were produced several IC's for functions generators. I think the best was Maxim 038. This IC generates sine, square and triangle. Max. frequency was theoretically 20 MHz, really 16 MHz. Unfortunately, Maxim 038 is ...

mostly the TC circuit like AD595 or AD597 do it. Check the circuits for thermocouples connection and read the datasheets.

try LT1004LP. Note, the resistors needs to have different value compare to ICL8069.

That's easy. Use a standard AD converter you like. Maybe 7107 or 7135 or a MCU with ADC. At input you need to make a Precision full-wave AC/DC converter (two OpAmps). At input to precision full-wave AC/DC converter you need a resistor divider.

Let me ask you a question: let's assume you want new development software. You should choose between local software version or cloud version. Which do you prefer and why?