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Atanasoff contemplated storing the coefficients of an equation in capacitors located on the periphery of a cylinder. He apparently had a prototype of his machine working "early in 1940". This machine was, it should be emphasized, probably the first use of vacuum tubes to do digital computation and was a special-purpose machine.
In materials management, ABC analysis is an inventory categorisation technique which divides inventory into three categories: 'A' items, with very tight control and accurate records, 'B' items, less tightly controlled and with moderate records, and 'C' items, with the simplest controls possible and minimal records.
Introduced in 1934, the 405 Alphabetical Accounting Machine was the basic bookkeeping and accounting machine marketed by IBM for many years. Important features were expanded adding capacity, greater flexibility of counter grouping, [ b ] direct printing of the entire alphabet, direct subtraction [ c ] and printing of either debit or credit ...
For instance, the machine that would eventually be known as the ABC 210 was described in mid-1982 in the context of an apparent deal with National Semiconductor, indicating a 1 MB system with hard disks and "Acorn, Unix or Idris operating systems" at an estimated price of around $3500, with a second processor product for the BBC Micro having ...
In mathematics, lexicographical order is a means of ordering sequences in a manner analogous to that used to produce alphabetical order. [16] Some computer applications use a version of alphabetical order that can be achieved using a very simple algorithm, based purely on the ASCII or Unicode codes for characters. This may have non-standard ...
In computing, natural sort order (or natural sorting) is the ordering of strings in alphabetical order, except that multi-digit numbers are treated atomically, i.e., as if they were a single character. Natural sort order has been promoted as being more human-friendly ("natural") than machine-oriented, pure alphabetical sort order. [1]
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In 1927, ABC produced the first porcelain-lined tub. [11] [12] [2] In 1928, ABC took over the Federal Washing Machine Company of Chicago, Illinois, which was producing washing machines for the Insull utilities company founded by Samuel Insull. ABC became Insull's supplier and made washing machines under the Fedelco brand exclusively for them. [5]