Sistem komputer yang dinamai The Harwell Dekatron atau sering disebut WITCH, pertama kali dibuat untuk Atomic Energy Research Establishment di Oxfordshire. Kini, komputer tua yang dijalankan sejak tahun 1951 (62 tahun), itu kembali dipamerkan di National Museum of Computing, Bletchley Park, Buckinghamshire.
Komputer yang baru saja direnovasi ini berhasil menetapkan rekor dunia untuk komputer digital tertua yang masih bekerja, sebagaimana dilansir World Record Academy (31/1).

Desain dan pembuatan komputer yang dimulai pada tahun 1949 ini memiliki tinggi 2 meter dan lebar 6 meter. Selain itu, komputer seberat 2,5 ton ini juga masih dijalankan selama 80 jam seminggu.

Kevin Murrell, salah satu pengawas museum, mengatakan: “Komputer tidak boleh dinyalakan selama lebih dari lima atau 10 menit tanpa istirahat.”

The 61-year-old Harwell Dekatron (or the WITCH) computer has clattered back into action after gathering dust for 20 years
Weighing an incredible 2.5 tonnes, it is as heavy as 20,000 IPhone 5¿s and could fill an entire room
So called 'hand computers' or human workers who logged information by hand are recorded to have raced against the WITCH, but had to retire after half an hour, exhausted and defeated, while the computer ploughed on
A lecturer checks a punched tape for the 1950s WITCH. Designed for reliability rather than speed, it could carry on relentlessly for days at a time delivering its error-free results
Then: Peter Burden (left) and Frank Hawley, a master at the Wolverhampton college r(ight), in the 1960s checking a punched tape for the WITCH computer
           Weighing an incredible 2.5 tonnes, it is as heavy as 20,000 IPhone 5s
           It is based a the National Museum of Computing, based at Bletchley Park, Bucks, after a mammoth three-year restoration project
The computer was built and used at the Atomic Energy Research Establishment in Harwell, Oxfordshire, from components more commonly found in a British Telephone exchange
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