Ikigai Daily
WonderFact431 of 1,961

Ray Tomlinson sent the first email in 1971 and chose the @ symbol to separate user from machine address.

Ray Tomlinson

TechnologyHistory

Why it matters

The idea in context

Ray Tomlinson sent the first network email in 1971 and picked '@' to separate the user from the host — reviving a near-forgotten symbol that is now everywhere.

Türkçe

Aynı kart, başka bir dilde.

Ray Tomlinson ilk e-postayı 1971'de gönderdi ve kullanıcıyı makine adresinden ayırmak için @ sembolünü seçti.
Ray Tomlinson

Ray Tomlinson, 1971'de ilk ağ e-postasını gönderdi ve kullanıcıyı ana bilgisayardan ayırmak için '@' işaretini seçti — neredeyse unutulmuş bir simgeyi diriltti; o artık her yerde.

Source trail

Read beyond the card.

Background reading: EmailAttribution and context are revised when stronger evidence appears. Corrections are welcome through the editorial page.
Open in the iPhone appEditorial method

Related cards

These cards share a subject or mode with the one above. The route is editorial, not personalised.

Q0411
WonderTechnology

The Apollo Guidance Computer flew astronauts to the Moon with about 4 KB of working memory — your phone has roughly a million times more.

The AGC had about 4 KB of RAM, 72 KB of fixed 'rope core' memory, and ran at roughly 1 MHz — less computing power than a musical greeting card. Yet in 1969 it steered Apollo 11 across 380,000 km, ran the landing radar, and even recovered gracefully from overload alarms minutes before touchdown. The story is not about weak hardware; it is about what disciplined engineering, compact code and ruthless prioritising can do under impossible constraints.

Ikigai DailyRead card
Next in the open archiveIBM's RAMAC 350, the first commercial hard disk drive (1956), stored 5 megabytes and weighed over a ton (about 1,000 kg).Q0447