Z3 (computer)

Z3 (computer)

Zuse Z3 replica on display at Deutsches Museum in Munich

The Z3 was an electromechanical computer designed by Konrad Zuse. It was the world’s first working programmable, fully automatic digital computer.[1] The Z3 was built with 2,000 relays, implementing a 22-bit word length that operated at a clock frequency of about 5–10 Hz.[2]Program code[3] and constant data were stored on punched film.

The Z3 was completed in Berlin in 1941. The German Aircraft Research Institute used it to perform statistical analyses of wing flutter.[4]Zuse asked the German government for funding to replace the relays with fully electronic switches, but funding was denied during World War II since such development was deemed “not war-important”.[5]:148 The original Z3 was destroyed in 1943 during an Allied bombardment of Berlin. The Z3 was originally called V3 (Versuchsmodell 3 or Experimental Model 3) but was renamed to not be confused with Germany’s V-weapons.[6] A fully functioning replica was built in the 1960s by Zuse’s company, Zuse KG, and is on permanent display at Deutsches Museum in Munich. The Z3 was demonstrated in 1998 to be, in principle, Turing-complete.[7][8] However, because it lacked conditional branching, the Z3 only meets this definition by speculatively computing all possible outcomes of a calculation.

Thanks to this machine and its predecessors, Konrad Zuse is often regarded as the inventor of the computer.

https://en.m.wikipedia.org/wiki/Z3_(computer)

Konrad Zuse

Konrad Zuse (German: [ˈkɔnʁat ˈtsuːzə]; 22 June 1910 – 18 December 1995) was a German civil engineer, inventor and computer pioneer. His greatest achievement was the world’s first programmable computer; the functional program-controlled Turing-complete Z3 became operational in May 1941. Thanks to this machine and its predecessors, Zuse has often been regarded as the inventor of the modern computer.
https://en.m.wikipedia.org/wiki/Konrad_Zuse

ESP32

ESP32 is a series of low cost, low power system on a chip microcontrollers with integrated Wi-Fi & dual-mode Bluetooth. The ESP32 series employs a Tensilica Xtensa LX6 microprocessor in both dual-core and single-core variations. ESP32 is created and developed by Espressif Systems, a Shanghai-based Chinese company, and is manufactured by TSMC using their 40 nm process.[2] It is a successor to the ESP8266 microcontroller.
https://en.m.wikipedia.org/wiki/ESP32

Herman Hollerith

Herman Hollerith (February 29, 1860 – November 17, 1929) was an American inventor who developed an electromechanical punched card tabulator to assist in summarizing information and, later, accounting. He was the founder of the Tabulating Machine Company that was amalgamated (via stock acquisition) in 1911 with three other companies to form a fifth company, the Computing-Tabulating-Recording Company later renamed IBM. Hollerith is regarded as one of the seminal figures in the development of data processing.[2] His invention of the punched card tabulating machine marks the beginning of the era of semiautomatic data processing systems, and his concept dominated that landscape for nearly a century.
https://en.m.wikipedia.org/wiki/Herman_Hollerith

Natural (music)

In music theory, a natural is an accidental which cancels previous accidentals and represents the unaltered pitch of a note.[1]

A note is natural when it is neither flat () nor sharp () (nor double-flat double flat nor double-sharp double sharp). Natural notes are the notes A, B, C, D, E, F, and G represented by the white keys on the keyboardof a piano or organ. On a modern concert harp, the middle position of the seven pedals that alter the tuning of the strings gives the natural pitch for each string.

The scale of C major is sometimes regarded as the central, natural or basic major scale because all of its notes are natural notes, whereas every other major scale has at least one sharp or flat in it.

The notes F, C, E, B, and most notes inflected by double-flats and double-sharps correspond in pitch with natural notes; however, they are not regarded as natural notes but rather as enharmonic equivalents of them and are just as much chromatically inflected notes as most sharped and flatted notes that are represented by black notes on a keyboard.

https://en.m.wikipedia.org/wiki/Natural_(music)