History of Computing
A historical arc through the people and ideas that built modern computing, from the Analytical Engine to the open-source era.
- Reading time
- ~23 min (+9 min optional)
- Level mix
- 10 beginner · 1 intermediate
Software in 2026 inherits decades of choices made by a small number of people with very long shadows. This path covers the figures and ideas — Ada Lovelace’s first program, Turing’s machine, the rise of Unix, the birth of the internet, and the open-source movement — that show up over and over in the language and habits of the field.
It’s not a complete history; it’s a starting point that gives you the references that practitioners constantly reach for.
Roadmap
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The long view
A brief tour of how computing went from mechanical calculators to global cloud platforms and AI, in less than a century.
Pioneers
19th-century mathematician (1815–1852) who wrote the first algorithm intended for a machine — Charles Babbage's Analytical Engine.
British mathematician and logician (1912–1954) whose 1936 paper laid the foundations of theoretical computer science.
An imaginary computer with an infinite tape and a tiny rule book — the model that defines what is computable.
- ENIACOptional
One of the first general-purpose electronic digital computers (1945) — a room-sized machine of 18,000 vacuum tubes, programmed by physically rewiring it, that helped launch the computer age.
- Grace HopperOptional
A US Navy rear admiral and computing pioneer who built the first compiler and championed machine-independent programming languages, paving the way for COBOL and high-level programming.
- Dennis RitchieOptional
The Bell Labs researcher who created the C programming language and co-created Unix — two inventions that together underpin almost all modern software.
The modern era
The story of Unix — from a 1969 Bell Labs side project to the common ancestor of Linux, macOS, the BSDs, Android, and iOS — and the design philosophy that shaped modern computing.
The movement, launched by Richard Stallman and the Free Software Foundation, asserting users' freedom to run, study, modify, and share software — the origin of the GPL, copyleft, and the open-source ecosystem.
How a US defence research network became the global, public, mostly-open internet — in roughly 40 years.
The study of the moral responsibilities that come with building technology — privacy, bias, automation, safety, and the wide societal impact of the software we create.