i think the first digital one was the D-17B, that was the guidance system of the Minuteman ICBM. Wikipedia says it used transistors so that it was a minicompute

i think the first digital one was the D-17B, that was the guidance system of the Minuteman ICBM. Wikipedia says it used transistors so that it was a minicomputer, don't know if it had integrated circuits by 1966. https://en.wikipedia.org/wiki/D-17B https://en.wikipedia.org/wiki/D-17B The Soviet R7 ICBM used a guidance system with tubes so that it was larger - that was a major reason why they needed a bigger missile; and that one would eventually take man to space. The v2 had a gyroscopic a guidance system. https://www.youtube.com/watch?v=Wj2QVgfyXik https://www.youtube.com/watch?v=Wj2QVgfyXik