1930

A world in transition awakens to the mechanization of calculation. The fertile ground of the 1930s draws nourishment from a rich intellectual heritage: Leibniz’s binary system (1703), Jacquard’s punched card (1801), and Boole’s algebra (1854). These concepts, dormant for decades, are poised to revolutionize our relationship with mathematics.

The crash of the 1929 stock market collapse still echoes as this pivotal decade opens. The American administration is mired in its own numbers. The 1930 census illustrates this bureaucratic quagmire, where two full years were needed to manually process the forms. An eternity.

Facing the Great Depression, Roosevelt deploys his New Deal. The state expands, social programs emerge. Each citizen becomes a card, each benefit a figure to record. The administrative machinery groans under the load.

Meanwhile, the eye of the totalitarian storm descends upon Europe. Nazi Germany, with its cold classificatory obsession, uses tabulators from Dehomag, an IBM subsidiary. Lives reduced to holes in cardboard. The bureaucracy of horror takes shape.

As the 1930s draw to a close, the air grows thick with tension. Intelligence services attempt to pierce the mystery of Enigma. This German encryption machine, with its rotating rotors, defies analysis. Cryptography will give birth to the first electronic calculators, a vital challenge.

Radio transforms information. Waves now carry voice and music across continents and oceans. In studios, technicians manipulate increasingly sophisticated equipment. Yet while information travels at the speed of light, its processing remains archaic.

Company counters become equipped. The characteristic clacking of mechanical calculating machines punctuates employees’ days. IBM, Burroughs, and NCR prosper by selling these precious aids to commercial calculation.

At the heart of this ferment, flashes of genius illuminate the scientific horizon. At Cambridge, Alan Turing publishes “On Computable Numbers” in 1936. This foundational text poses the question of the theoretical limits of automatic computation. His abstract universal machine establishes the concept of the modern computer, though no one grasps its significance. Meanwhile at MIT, Claude Shannon, a brilliant 21-year-old student, links Boolean algebra to electrical circuits in his master’s thesis. This fruitful union will spawn the digital electronics of the 20^th century.

The factory gradually automates. Ford’s assembly lines represent only a first step. Industrialists seek systems capable of executing and regulating processes. Punched cards, heirs to the Jacquard loom, emerge as instruction carriers.

All scientific domains collide with the limits of manual calculation. Quantum physicists, astronomers, meteorologists: all juggle complex equations that saturate human processing capacity. Pencil and paper no longer suffice.

Aviation demands diabolical precision. A tiny error in aerodynamic calculations spells catastrophe. At the Aberdeen ballistics laboratory, female mathematicians, called “computers”, tirelessly calculate trajectories for artillery. Meticulous work upon which human lives depend.

A new generation emerges from universities. These young scientists conceive of calculation differently: no longer as a series of isolated operations, but as a process, a logical flow. They think in algorithms before the word becomes commonplace. AT&T’s Bell Labs forms an unparalleled crucible of innovation. In its corridors, mathematicians, physicists, linguists, and engineers cross paths. This fertile interdisciplinarity nourishes nascent computer science.

The race to mechanize calculation accelerates. The electromagnetic relay gradually replaces the mechanical lever. Faster, more reliable, it constitutes a first form of electronic breakthrough. Patents pile up in national patent offices.

In this fever of innovation, certain standards begin to emerge, such as IBM’s punched card with its 80 columns and 12 rows. This cardboard rectangle asserts itself as the universal carrier of coded information, the direct ancestor of our digital files.

When Hitler’s troops invade Poland in September 1939, no one suspects that the global conflict will serve as a technological accelerator for computing. Military urgency will soon transform mechanical calculators into electronic giants.

These 1930s, caught between the Great Depression and World War II, carry within them the seeds of our digital age. Theoretical concepts await their material embodiment. The ground is ready, the storm rumbles. Paradoxically, in this world on the brink of the abyss, the roots of the computer revolution germinate.