XYZ was the first Universal Digital Machine from the family of early computers built and launched in Poland in 1958. It was ahead of EMAL2 [pl] by a few months, while the earlier EMAL [pl] was not fully launched.[1]
^Konstrukcje polskie: XYZ, Empacher A.B., Maszyny liczą same? / Adam B. Empacher / Katalog HINT, Wiedza Powszechna, 1960, s. 114-122 (in Polish)