General description acceptable. Several of these five stage machines, used Lu, Pz, and Ld instructions to  read from a keyboard, store data, and output a result respectively. Raúl Rojas showed how to overcome one  flaw in the architecture of one of t
General description acceptable. Several of these five stage machines, used Lu, Pz, and Ld instructions to  read from a keyboard, store data, and output a result respectively. Raúl Rojas showed how to overcome one  flaw in the architecture of one of these machines by giving it lots of memory and simulating indirect  addressing. Their execution was fairly modern it that it supported microsequencing, however unlike current  machines this was done through control wheels. Unlike other devices of the time, they used what was called  "semi-logarithmic" representation which is similar to today's floating point. One of few uses of them was to  calculate the critical frequencies of wing flutter. These devices lacked conditional branch support which made it  hard to implement arbitrary computable programs in the Turing sense. The first of them used metal sheets for  mechanical memory and the third of them did not use vacuum tubes but instead used relays. Their designer created  the language Plankalkül. The early ones were destroyed by Allied Bombing. For 10 points, name these early  programmable computers that were designed by their namesake in Nazi Germany.
General description acceptable. Several of these five stage machines, used Lu, Pz, and Ld instructions to  read from a keyboard, store data, and output a result respectively.
computers designed by Konrad Zuse [or Z computers ; take Z1 or Z2 or Z3 or Z4; prompt on  “German” or “Nazi” computers]