The WANDERER company has a huge history (going back to 1885) in making bicycles, motorcycles,
and even cars (read more about it on this link). 
In the early 1950's, WANDERER is gradually buying out EXACTA CONTINENTAL Gmbh, a big (mechanical) calculator manufacturer,
which did develop a partial electronic book-keeping machine (The Multitronik) as early as 1958.
In 1968 the WANDERER Company is bought by NIXDORF COMPUTER AG.
even today the WANDERER-WERKE still exists.

WANDERER Works in the 1960's ^