
A room-sized computer: how programs were launched before the era of personal computers
1. Computer Architecture in the 1950s
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1. Computer Architecture in the 1950s

Today, a programmer just needs to open an editor, type a few lines, press “Run” — and he immediately sees the result. Now imagine: you are a programmer in the 1960s. You have no screen, no keyboard, no Stack Overflow. All you have is paper, a pencil, and a stack of punched cards.

It all started with ARPANET, an experimental project of the US Department of Defense in 1969.

The programming world is full of languages that most developers no longer remember.

Mid-20th century. Harvard University operates one of the most advanced computers of its time, the Harvard Mark II.

For decades, programming was considered a purely technical activity involving algorithms, logic, and engineering.

Nature is the greatest engineer. It has been “tuning” its algorithms through evolution for millions of years, creating efficient, robust, and adaptive systems.

Many people who start their programming journey face the same difficulties.

Every year, tech blogs and conferences come up with dozens of new names: Bun, SolidJS, Qwik, Elixir, Zig, Astro, HTMX.

1. Ariane 5 (1996) — The European rocket exploded 37 seconds after liftoff due to an attempt to convert a floating-point number to a 16-bit integer.

Before the world knew about computer hackers, there was a whole subculture called phreaks.

It has become a tool that transforms key areas of our lives — from disease diagnostics to fleet management and school lessons.

Developers often repeat the same error, even after they have fixed it once.