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A biography of Callister, The Man Who Invented Vegemite, written by his grandson Jamie Callister, was published in 2012. [4] [13] Callister is the great uncle to Kent Callister, a professional snowboarder who has competed at the Winter Olympics for Australia. The Cyril Callister Foundation, established in 2019, commemorates his life and work.
Vegemite (/ ˈ v ɛ dʒ i m aɪ t / VEJ-ee-myte) [1] [2] is a thick, dark brown [3] Australian food spread made from leftover brewers' yeast extract with various vegetable and spice additives. It was developed by Cyril Callister in Melbourne , Victoria for the Fred Walker Company in 1922, and it was first sold in stores on 25 October 1923.
He created the first commercially available portable computer, the Osborne 1, released in April 1981. It weighed 24.5 pounds (12 kg), cost US$1795—just over half the cost of a computer from other manufacturers with comparable features—and ran the popular CP/M 2.2 operating system. [7] It was designed to fit under an airline seat. [8]
Vegemite was created, and first sold in 1923 [4] [6] after Walker's daughter Sheilah selected the winning entry from a public competition to name the product. [7] [8] After poor sales performance, Walker changed the product's name to Parwill (a joking reference to Marmite: "Ma might, but Pa will") before returning to Vegemite. [9]
The "brain" [computer] may one day come down to our level [of the common people] and help with our income-tax and book-keeping calculations. But this is speculation and there is no sign of it so far. — British newspaper The Star in a June 1949 news article about the EDSAC computer, long before the era of the personal computers.
Made several fundamental contributions to theoretical computer science, including the Turing machine computational model, the conceiving of the stored program concept and the designing of the high-speed ACE design. Independently of Alonzo Church, he formulated the Church-Turing thesis and proved that first-order logic is undecidable.
Gary Arlen Kildall (/ ˈ k ɪ l d ˌ ɔː l /; May 19, 1942 – July 11, 1994) was an American computer scientist and microcomputer entrepreneur. During the 1970s, Kildall created the CP/M operating system among other operating systems and programming tools, [5] and subsequently founded Digital Research, Inc. to market and sell his software products.
The A-0 high-level compiler is invented by Grace Murray Hopper. April 1952: US IBM introduces the IBM 701, the first computer in its 700 and 7000 series of large scale machines with varied scientific and commercial architectures, but common electronics and peripherals. Some computers in this series remained in service until the 1980s.