The coding machines Eva Salier worked on during the Holocaust were invented by whom?
Eva Salier Eva Salier, née Hellendag, (1923 – August 12, 2014). A survivor of the Nazi Holocaust. She has written a book about her experience during her enslavement by the Nazis: "The Survival of a Spirit", a summation of the hardships suffered by her s mall group of "girls" as they were forcibly moved from secret site to secret site where they worked on electronic gear, including sending tubes for the enigma coding machine and V-2 guidance systems. As she tells the story, she worked in the first solid state transistors that would replace the tubes in the guidance system of the V-2. But this has never seen the light of day. The book was also translated into German as "Lebensweg einer Koblenzer Jüdin" and as "Ungebrochen durch die Hölle"
Zigzag code In coding theory, a zigzag code is a type of linear error-correcting code introduced by . They are defined by partitioning the input data into segments of fixed size, and adding sequence of check bits to the data, where each check bit is the exclusive or of the bits in a single segment and of the previous check bit in the sequence.