Concurrently with Apollo, Fairchild also sold ICs to Saab in Sweden for the Datasaab CK-37 computer in the Saab 37 Viggen military aircraft. The Apollo Guidance

Concurrently with Apollo, Fairchild also sold ICs to Saab in Sweden for the Datasaab CK-37 computer in the Saab 37 Viggen military aircraft. The Apollo Guidance Computer and the CK37 was developed more or less at the same time in the sixties. Saab used the TO version of the ICs while MIT used flatpacks (Block II). The ICs where called "MLEs" (Micro Logic Elements) at the time. From former Datasaab employee, Bengt Jiewertz [1]: "Saab was one of the biggest customers of Fairchild beside NASA in the beginning of the 1960s. Early component investigations and tests used a lot of MLE. The first 5 prototypes, delivered during 1962–1963, needed about 3000 MLE each. [...] We had good relations with Fairchild who used our experiences and made changes to the MLE to better fit our building of computer blocks." [1] https://www.datasaab.se/Papers/Articles/Viggenck37.pdf https://www.datasaab.se/Papers/Articles/Viggenck37.pdf