Overflow detection calculator and method of overflow determinati

Details Overflow detection calculator and method of overflow determinati Overflow detection calculator and method of overflow determinati

1990-08-30

1993-03-23

Malzahn, David H.

Boots, shoes, and leggings

3647365, G06F 738

Patent

active

051970228

ABSTRACT:
A calculation method suitable for use in statistics calculations and a calculator using the method are disclosed. The method has the steps of storing a memory content from a memory in a first register of a calculation circuit; storing input data in a second register of the calculation circuit; performing a calculation on the contents of the first register and the second register, and storing the result of the calculation in the first register; determining that the calculation result stored in the first register has not overflowed; transferring the content of said first register to the memory and overwriting the memory content therewith, if the calculation result has not overflowed after the processes have been repeated a specified number of times. The calculator has an input section for inputting data; a calculation section for performing a specified calculation on the data; an overflow determination section for determining whether or not a calculation result that is the result of the calculation has overflowed; a calculation totalling section for determining whether or not the calculation has been performed a specified number of times; and a memory section for storing the calculation result obtained by the calculation means, if the calculation totalling means has determined that the calculation has been performed the specified number of times.

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"Announcing the SR-50 super slide-rule calculator from Texas Instruments" Texas Instruments Inc. 4 page brochure Sep. 3, 1974.

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