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HEXCO Hex Mechanical Stylus Calculator |
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In 1967 Hexco, Inc. was started by Tom and Linda Tarrant, both of whom had been Systems Engineers for IBM. Hexco began offering products for programmers on large main-frame computers. Our first product was a hand-held manual calculator that added and subtracted in hexadecimal, the numbering system used in computers, hence our name, Hexco, for "hexadecimal company." Since that time, we have produced a myriad of products for programmers and a series of movable labeling products used in computer environments. In 1984, Hexco expanded into the academic world, offering products for students competing in spelling bees when the first daughter Valerie started competing. Since then, we have expanded our academic products to encompass study aids for students at all levels of competition, not only in spelling, but also in accounting, literary criticism, computer science, and computer applications. Our current expansion is in the home school market, since we already have a large number of home schoolers using our products in their curricula, beginning with spelling products and soon moving into computer application products centering on word processing, spreadsheet, and database applications.
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| 1977
Hexadaisy Hexidecimal Calculator
Here was another approach by another company!
This 1977 unit looks like a circular slide rule, but is is designed to
working with hexadecimal numbers and conversions. It is made from Vinyl
plastic, the same material used to make phonograph records. This unit is
new and includes the original sheet of instructions.
Instructions are given for the following operations: * Calculation of Offset for Relative Addressing * Addition of Hexadecimal Numbers * Subtraction of Hexadecimal Numbers * Two's Complement of Hexadecimal Numbers * Decimal to/from Hex Conversions * Hex to/from Decimal Conversions
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