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Time-Line computer Archive Ltd is a not for profit company, our aim is to collect, restore and exhibit all types of early computers and electronics.

We hope that our website will give an insight to the development of computing and will help give inspiration to other people to collect rather than throw out historical electronics.

We also would like to make a record of peoples experiences of early Computing and Electronics primarily from Scotland and the North of England but also from Great Britain generally. If you have any Experiences of early computing or Electronics please don't hesitate to contact us.

Drum Storage Unit

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drumstore
Magnetic Drum Store
The backing store on the ICT 1301 is on a Magnetic Drum, it
is powered by a 3/4 horsepower three phase motor driving
the drum at a speed of 5,250 rpm.
Each drum holds 12,000 words of 48 bits.
Around the drum are 240 read/write heads which are fixed in
position, unlike modern disks which move their heads to access
different tracks on their flat media.