IBM Personal Computer (1981): The PC That Set the Standard
The IBM PC became the dominant design for personal computers, and its open architecture and licensed operating system created the IBM-compatible industry.
Era · 1945 – present
From the Cold War and the Space Race to the fall of the Berlin Wall and the world we live in today.
The IBM PC became the dominant design for personal computers, and its open architecture and licensed operating system created the IBM-compatible industry.
Columbia completed 37 orbits and landed safely, proving the reusable Space Shuttle and opening a programme of 135 missions that ran until 2011.
The coup collapsed within about 18 hours; its leaders were tried and imprisoned, and Spain's young democracy was strengthened.
Solidarity was suppressed and driven underground, but the regime failed to solve Poland's crisis and negotiated with the union in 1989.
The memorial was dedicated in 1982 and became one of the most visited and influential memorials in the United States.
The Syrian army retook Hama after about four weeks of siege and bombardment; an estimated 10,000–40,000 people were killed and the Islamist insurgency in Syria was crushed.
Phalangist militiamen killed between several hundred and several thousand civilians; Israel's Kahan Commission found Defence Minister Ariel Sharon personally responsible for ignoring the danger, and he left the defence ministry.
US and Caribbean forces overthrew Grenada's Revolutionary Military Council within days; constitutional government was restored and elections held in December 1984.
SDI funded a large research programme but never deployed a working shield; it complicated arms talks and was reorganised in 1993.
Petrov reported the alarm as a system malfunction, no retaliation was considered, and the warning was later traced to sunlight reflecting off clouds.
The exercise ended without incident, but later evidence showed some Soviet forces went on heightened alert, prompting Reagan to seek to ease tensions.
All 269 people aboard were killed; the incident sharpened Cold War tensions and led to new civil aviation rules and the opening of GPS to civilian use.