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Programmable Calculators and Their Application to Feeding and Management of Dairy Cattle¹

Iowa State University, Ames 50011

ABSTRACT

The programmable calculator offers high-speed numerical analyses at a relatively low cost. Laborious and complicated calculations in ration formulation and other dairy-management decisions can be simplified greatly. Most dairy producers, however, have neither the time nor background for developing calculator programs. The Iowa State University Cooperative Extension Service has developed a subscription service to supply programs to persons involved in agricultural decisions. Also, the solid-state module has been developed to store programs permanently inside the calculator. The programmable calculator offers an aid in the day-to-day management decisions by agricultural producers, but extension personnel also find it time-saving and a useful educational tool.

¹ Journal Paper No. J-9567 of the Iowa Agriculture and Home Economics Experiment Station, Ames. Project No. 1053.

² Present address: Department of Animal Science, University of Minnesota, St. Paul 55101.