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Vintage Computers Any vintage computer systems, calculators, video games etc., but with an emphasis on 1980s and earlier equipment.

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Old 27th Mar 2019, 12:21 pm   #1
livewireless123
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Default Computer module?

I found some of these in an old junk box, just out of interest I wonder if anyone knows what equipment they were used in. FF I presume is for flip flop. I seem to remember They were on big boards I found in an electronic junk shop in Manchester. I was more interested in the 100Khz crystals on the boards as i was after building a nixie clock.
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Old 27th Mar 2019, 5:05 pm   #2
duncanlowe
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Default Re: Computer module?

It seems you are correct. http://www.electrojumble.org/DATA/Mu...Combi_Data.pdf
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Old 29th Mar 2019, 2:32 am   #3
Karen O
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Default Re: Computer module?

What you have there looks like an interesting piece of computer history.

I just need thirty of them (plus a couple of spares)
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Old 29th Mar 2019, 12:18 pm   #4
livewireless123
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Default Re: Computer module?

That seems to fit, Mullard from the early 60's. I seem to remember opening one up and it had the Mullard black glass transistors inside. I think I got these in about 1970, they were being thrown out as obsolete and TTL was on the way in.

I can't find 30 of them sorry, if you PM your address I can send one, I only found a few and I've had another request for one. Don't worry about post cost they should go as a large letter.
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Old 29th Mar 2019, 8:06 pm   #5
Karen O
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Default Re: Computer module?

Just kidding LV123

But many thanks for your very kind offer.

They'd make an interesting talking piece if they were mounted in a box frame with a little added printed history.

I think I drift somewhere between art and science!

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Old 30th Mar 2019, 2:10 pm   #6
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Default Re: Computer module?

That brings back memories! In 1968 when I went to work for a well-known government radio and electronics security organisation in Gloucestershire, I was initially put in their technician's training school. For the trainees to 'play around with', there was all manner of relatively ancient bits of hardware - including those - known as 'Combi blocks'. In essence, they were the forerunner of DTL (diode transistor logic), and occasionally one would find a 1U 19" panel with several solderable matching sockets physically assembled therein in parallel. There was the FF1, FF2, (flip-flops), PS1 and PS2 (pulse stretchers) and others. All were labelled accordingly and were different colours. If memory serves me correctly, the transistors within were OC44, OC45 and possibly OC70.

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