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US 4,071,891 AGranted
Electronic calculator - register for hematology differentials
OwnerGeorge H. Barrowsinventor
Life of this patent
Estimating the term…
Abstract
An electronic tabulator for computing and displaying running totals of six different cells as well as a running total of the combined cell count. Means are also provided for dividing the individual cell count by the total cell count to express the individual cell counts as a percentage of the total. In a preferred embodiment, a keyboard provides data entry to seven commercially available calculator chips which compute the running totals and individual percentages as well as provide an output to individual LED displays.
Claims8
An electronic calculator-register for hematology differentials comprising:
- A. a plurality of counter-calculator means for storing numbers entered therein and performing mathematical computations on said entered numbers in response to instructional commands entered therein,
- B. dual purpose keyboard means coded for the first purpose of visibly detecting specific types of blood cells and manually entering said cells in a one-by-one fashion and including a plurality of input elements coded for the second purpose of introducing numerical data and instructional commands in response to the operation of said input elements,
- C. switching network means operatively connected said keyboard entry means and said plurality of counter-calculator means for entering into said counter-calculator means said data and instructional commands introduced by said keyboard means,
- D. said switching network means including first means for operatively connecting each of a first selected plurality of said input elements to different ones of a selected plurality of said counter-calculator means, and for entering an interger 1 corresponding to the specific blood cell type visibly detected in one of said counter-calculator means and instructing one of said counter-calculator means to add the entered integer 1 to the numbers stored therein and to store the resultant sum of detected blood cells when the respective said input element is operated,
- E. said switching network means including second means for operatively connecting said first selected plurality of input elements to another of said counter-calculator means and for entering an interger 1 in said counter-calculator means and instructing said last mentioned counter-calculator to add the entered integer 1 to the number stored therein and to store the resultant sum when any of said first selected plurality of input elements is operated,
- F. said switching network means including third means for operatively connecting each of a second plurality of input elements to each of said first selected plurality of counter-calculator means and for entering a number and instructional commands therein causing each of said counter-calculator means to effectively divide the resultant sum previously stored therein by the second number and store resultant quotient, and
- G. display means associated with each of said counter-calculator means for displaying numbers currently stored therein.
4 more elements
Dependencies are inferred from the claim text.