Sinclair used this very radical approach to produce a small, low-cost, scientific calculator by reprogramming the Texas Instrument TMS0805 chip, that was basically designed for simple four-function calculators, to provide scientific functions.ĭistinctive features: Small, for its time, limited scientific, reverse-Polish notation (RPN) calculator. Having only to meet the market's requirements 6 months ahead instead of 12." Furthermore, the design effort and cost are considerably less so also is the total development time, allowing the calculator manufacturer the luxury of Respect to the validity of the overall design or production yields. The resultant chip will be as easy to produce as the standard device from which it has been developed so there are no unknown quantities with To radically alter the capabilities of the end product-the calculator. However, there is now an alternative, which involves re-programming a standard chip ![]() Meant a substantial investment of both cash and man-power in a product which takes almost 12 months to come to a rapidly changing market. ![]() Until recently, a custom calculator chip design has In the latter case, he will have a unique product, but there are risks involved. Whose calculators will therefore have the same functional characteristics as his own. In the former case, he will be faced with the prospect of competing head on with other manufacturers using the same chip, The problem of whether to buy a standard chip from a semiconductor house, or to design a new chip. In an article in the journal Wireless World, Nigel Searle of Sinclair Radionics Ltd outlined a general problem of calculator manufacturers: "When considering new products, a calculator manufacturer is constantly faced with Suggest-A-Calc: We are always looking for innovative, high-quality products.Producing a scientific calculator using a simple four-function calculator chip. This HP classic features a unique production number and “limited edition” script, making it a great gift for collectors, scientists and engineers.Ĭontact Us: Have a question, suggestion, or concern? Visit our Help Center for assistance!.HP classic available as limited edition.Reduce the number of keystrokes with RPN capabilities.Store complex calculations directly in the memory for rapid retrieval.Gain a scientific calculator with programmable functions and built-in support for complex numbers, matrix math, numerical integration and root solving.This HP scientific calculator touts up to 100x faster processing power than its predecessor. The compact size and light-weight metal frame of the HP 15c allow scientists and engineers to easily carry this powerful calculator from meeting to meeting.The HP 15c scientific calculator presents an intuitive, horizontal interface, just like the original.This classic RPN calculator is up to 100x faster than its predecessor and features a unique production number and “limited edition” script, making it a great gift for collectors and technical professionals. Benefit from faster processing power, great shortcuts like RPN and an intuitive, horizontal interface. The HP-15C Scientific Calculator combines intelligent design with advanced scientific calculations. HP’s Popular HP-15C Scientific Calculator in a Limited Edition. ![]() Hewlett Packard HP-15C Limited Edition RPN Scientific Calculator Home > Students > Scientific Calculators > Hewlett Packard HP-15C Limited Edition RPN Scientific Calculatorġ0/26/13 - Out of stock.
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