Re: DTL logic. I've finally seen some.
Re references to Elliott made logic; RTL was used first as discrete component units followed by Minilog as encapsulated modules. This was followed rapidly by discrete component DTL on early "DZ" boards and then integrated DTL in dil and flat packs using the 94n range from Fairchild, TI etc also on DZ mother boards. A range of flat pack modules were also used briefly prior to TTL LSI and were designed for use in wire wrap assemblies. This then evolved into the use of TTL in dil packaging. The one logic type promoted by SGS Fairchild that rarely featured was Ctul which was fast and I believe used a lower voltage. The main driver for the transition from RTL to DTL was the requirement for speed and military environment. Examples of all these units exist in equipment at Bletchley Park.
Orakle42.
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