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The Williams tube, or the Williams–Kilburn tube named after inventors Freddie Williams and Tom Kilburn, is an early form of computer memory. [1] [2] It was the first random-access digital storage device, and was used successfully in several early computers. [3] The Williams tube works by displaying a grid of dots on a cathode-ray tube (CRT).
This was the first rotating drum storage device in existence. [73] 1948 June 21 United Kingdom: The Manchester Baby was built at the University of Manchester. It ran its first program on this date. It was the first computer to store both its programs and data in RAM, as modern computers do.
In 2012, Western Digital announced the first 2.5-inch, 5 mm thick drive, and the first 2.5-inch, 7 mm thick drive with two platters [31] Unit production peaked in 2010 at about 650 million units. Unit shipment has been in a slow decline since then, shipping about 276 million units in 2018 with a somewhat slower decline projected thereafter.
The MITS Altair, the first commercially successful microprocessor kit, was featured on the cover of Popular Electronics magazine in January 1975. It was the world's first mass-produced personal computer kit, as well as the first computer to use an Intel 8080 processor. It was a commercial success with 10,000 Altairs being shipped.
Device zero was the first file server, device one was the Mirror or The Bank tape backup, the rest were user computers, or Utility Servers. Systems with more than one file server had them at zero and up, then the tape backup, then the user computers. No matter what the configuration, one could only have 64 devices.
One-to-one correspondence, [2] a rule to count how many items, e.g. on a tally stick, eventually abstracted into numbers. Comparison to a standard, [3] a method for assuming reproducibility in a measurement, for example, the number of coins. The 3-4-5 right triangle was a device for assuring a right angle, using ropes with 12 evenly spaced ...
The 1945 creation of the first programmable computer, ENIAC, is a good guess. Or maybe we stretch it back to Charles Babbage and Ada Lovelace’s work on the analog Analytical Engine in the 1830s.
Drum memory of a Polish ZAM-41 computer Drum memory from the BESK computer, Sweden's first binary computer, which made its debut in 1953. Drum memory was a magnetic data storage device invented by Gustav Tauschek in 1932 in Austria. [1] [2] Drums were widely used in the 1950s and into the 1960s as computer memory.