On This Day: October 29th

The world’s first hard-drive and The world’s first computer-to-computer connection. All on today’s On This Day from TEST Huddle.


1956 – The World’s First Hard-Drive4.0M DigitalCAM

The world’s first hard disk drive is created at International Business Machines (IBM) by a team lead by Reynold B. Johnson. The device named the  IBM 305 RAMAC (Random Access Method of Accountingand Control) holds 5MB of data on fifty 24-inch disks which spin at 1,200 rpm in a case roughly the size of two refrigerators for at a price of about US$10,000 per megabyte. IBM leased the computers for US$3,200 per month.









1969 –  The World’s First Computer to Computer ConnectionA log of the first IMP connection

At 10:30pm on this day in 1969, the first computer-to-computer connection in history is established over a 50kbps AT&T phone line. The connection is made between a SDS Sigma 7 operated by a team under Professor Leonard Kleinrock at the University of California Los Angeles (UCLA) and an SDS 940 operated by a team under Douglas Englebart at the Stanford Research Institute (SRI), marking the birth of ARPANET, the first wide area (long distance) packet switching network and the precursor to the later Internet. Both computers are connected to the phone line through an Interface Message Processor (IMP). Leonard Kleinrock later describes the initial connection as seeing individual letters being sent by the team at UCLA and the team at  SRI confirming if they had received it on their screens.


Klex Worm




Images: Wikipedia

About the Author

Ronan Healy

Hi everyone. I'm part of the EuroSTAR team. I'm here to help you engage with the EuroSTAR Huddle Community and get the best out of your membership. Together with software testing experts, we have a range of webinars and eBooks for you to enjoy and we have lots of opportunities for you to come together online. If you have any thoughts about the community, please get in contact with me.
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