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7325020 |
Input and evaluation of fractions using a calculator
A method of input and evaluation of fractions using a calculator is described. The calculator receives a user-entered expression including a fraction where the fraction is entered using a division...
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6847378 |
System and method for performing scale and bias operations by preclamping input image data
In one embodiment, a scale and bias unit for use in a graphics system includes a preclamping unit configured to receive an input and to responsively generate an output value equal to a first value...
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5485410 |
Measurement calculator
A measurement calculator for storing and calculating measurement data comprising computer circuitry having central processing unit circuitry adapted for controlling the status of operations of the...
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5481626 |
Numerical expression reognizing apparatus
A numerical expression recognizing apparatus for recognizing a handwritten numerical expression and outputting it as a code train. This apparatus includes: a coordinates input apparatus for...
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5309380 |
Computer display for input and display of improper and mixed fractions
A calculator keyboard includes various keys such as numeric keys, a mixed fraction key, and a fraction key, a RAM, a ROM and a CPU. A character including a value or variable for a mixed fraction...
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5272653 |
Multilane keyboard for inch calculators
The main difficulty in working with the U.S. length units is in adding or subtracting dimensions and especially when converting them into metric, both in making and in using drawings for general...
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5260886 |
Default denominator for fraction entry and display
In a calculator, apparatus and method for supplying a default denominator for entering and displaying fractions. A default value is selected and stored with a simple procedure and may be retrieved...
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5155697 |
Most precise fraction display method
In a calculating device, a method for calculating a fraction that most accurately represents a related decimal value stored within the device. The user may select a maximum denominator value to...
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5138566 |
Fractional/decimal/digital converting calculator
A Production Pal is provided that permits a user to perform calculations directly upon fractional data. Input to the Production Pal can be either a length expressed as a mixed fraction or...
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5089980 |
Double keystroke fraction entry and interface method
In a calculating device, a method to allow a user to enter fractions in the form "b/c", where "b" and "c" are integers; "b/c" is a fraction; and the denominator "c" is within a prespecified range....
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5025403 |
Fraction entry and display
A calculator receives fraction values directly, without requiring the user to perform mathematic operations, by use of a primary key to separate digits of the whole number, numerator and...
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4954977 |
Pedagogic calculating machine for arithmetic instruction
Calculating machine comprising a microprocessor (1) controlling the operations carried out by the machine, a stack (2) of shift registers connected to the microprocessor and intended for the...
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4872112 |
Recipe calculator
A recipe calculator 10 having a keyboard 24, display 22, and microcontroller 23 which includes microprocessor 25, ROM 26, RAM 27 and display driver 28, provides an apparatus for calculating food...
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4860233 |
Dedicated foot/inch calculator
A dedicated calculator for performing arithmetic operations on dimensioned quantities, particularly those in the English units of feet, inches and fractions of inches. The calculator keyboard...
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4545022 |
Fractional calculator
A fractional calculator (10) has a keyboard (12) with numeral keys (18) and denominator keys (20). Through use of the numeral keys (18) and the denominator keys (20), fractional inputs may be...
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4488250 |
Hand-held calculator for performing calculations in feet, inches and fractions
A portable hand-held electronic calculator for performing feet, inch, and fraction calculations and for displaying numerical results in feet, inches, and fractions of inches. Values for feet,...
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4463438 |
Shaft alignment calculator
The specification discloses a calculator for determining the distance that a machine coupled to a second machine must be moved so that the coupled shafts between the machines will be properly...
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4100603 |
Feet, inches and sixteenths adder
An electronic adding machine for adding and subtracting feet, inches, and sixteenths inch has a hexadecimal keyboard with the decimal keys 0-9 contrasting with the six other keys 10-15. Each...
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4064398 |
Electronic calculator
An electronic calculator includes input means for entering numeric data, and means for discriminating between the integral and the fractional part of a mixed fraction entered by said input means....
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3973113 |
Electronic calculator for feet-inch-fraction numerics
An apparatus is disclosed for automatically adding, subtracting, multiplying and dividing feet, inches and fractions of an inch and for the recordation of the results of said arithmetic functions...
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