Before they were machines, computers were people
Long before the silicon chip, a 'computer' was a job title held by humans. In the mid-20th century, these individuals—often women—performed the grueling, manual arithmetic required for complex science. The transition from human brains to digital circuits is a story of mechanical ingenuity and shifting definitions.
The term 'computer' has undergone a radical linguistic evolution. In 1613, English writer Richard Brathwait used the word to describe a human 'Arithmetician' who could reduce days into a short number. By the mid-20th century, this role was often filled by women, who were frequently hired for their ability to perform precise calculations at a lower cost than their male counterparts. It was not until 1945 that the term became widely used to describe the programmable digital electronic machines we recognize today.
The lineage of computation stretches from ancient tally sticks and the Babylonian-derived Roman abacus to the sophisticated Antikythera mechanism, a mechanical analog computer from approximately 100 BCE used to track astronomical positions. The 19th century introduced mechanical pioneers like Charles Babbage, the 'father of the computer,' who conceptualized the Analytical Engine. While his design featured modern elements like an arithmetic logic unit and punched card input, the project failed due to political and financial hurdles.
The technological leap to modern computing relied on a series of hardware breakthroughs. The 1930s saw the rise of electromechanical machines, such as Konrad Zuse's Z2. By 1941, Zuse developed the Z3, the first working electromechanical programmable, fully automatic digital computer, utilizing 2,000 relays and a binary system. This era transitioned through vacuum tubes and transistors to the 1950s invention of the MOSFET and integrated circuits. This progression eventually enabled the microcomputer revolution of the 1970s and the Digital Revolution, driven by the rapid doubling of transistor counts known as Moore's Law.
Source: Computer
