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6993768 |
Method of storing multi-parameter configuration information
A system and method define a multi-parameter configuration using an identifier. The identifier involves assigning values to available options for parameters of a configuration and using the...
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5870323 |
Three overlapped stages of radix-2 square root/division with speculative execution
In hardware SRT division and square root mantissa units maximal quotient selection overlapping for three quotient digits per cycle are used. An effective radix-8 implementation cascades three...
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5668989 |
Two-digit hybrid radix year numbers for year 2000 and beyond
A method and related input/output devices for using biased 2 digit "hybrid radix" numeric fields for inputting, generating, storing, processing, and outputting year numbers ranging from 1900 to...
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5191539 |
Control apparatus for an injection molding machine
A control apparatus for an injection molding machine has a unit for setting data corresponding to a molding operation of the injection molding machine and for controlling the molding operation of...
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5161118 |
Hand held data processing apparatus
In a hand held processing apparatus, there is a central processing unit (CPU) arranged to include a calculating mode for performing calculations and a memorandum pad mode for storing data and for...
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5148480 |
Decoder
A decoder having a plurality of outputs (R 0 -Rn) each associated with a particular output valve is arranged to add together two binary numbers (A, B) and to select one of the outputs in...
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5132925 |
Radix-16 divider using overlapped quotient bit selection and concurrent quotient rounding and correction
A radix-16 divider, generally including two improved radix-4 dividers cascaded combinatorially, also utilizes improved overlapping quotient bit selection, together with concurrent quotient bit...
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4779219 |
Electronic apparatus having an improved calculation function
In an electronic apparatus performing various calculations based on input data which are entered by pressing numeral keys and calculation keys and outputting results by moving a decimal point by a...
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4680725 |
Dual function decimal key
The number of keys on a keyboard are reduced by employing the decimal point key as a control key when stroked the second time in the entry of a decimal number word. This eliminates the need for a...
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4418395 |
Digital data processing system with a value setting unit for protecting and controlling an electric power system
A digital data processing system for protecting and controlling an electric system, wherein plural data values indicative of system limits are generated and supplied to a processing unit for...
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4295202 |
Hexadecimal digit shifter output control by a programmable read only memory
A Scientific Instruction Processor (SIP) uses a Programmable Read Only Memory (PROM) to control the output of a two stage shifter. The shifter performs the necessary mantissa shift operations of...
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4189780 |
Electronic computer with automatic decimal point setting means
In an electronic computer a device for selecting the number of decimal digits to be printed in the results is adapted to cause the automatic setting of the decimal point in each result to be...
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4156921 |
Adaptable programmed calculator including automatic decimal point positioning
An adaptable calculator is provided by employing five MOS/LSI circuits interconnected by a multiple line bus system. They include (1) a read-only memory circuit group; (2) a control and timing...
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4100600 |
Data display system for electronic calculator or microprocessor
An electronic calculator or microprocessor system of the type preferably having keyboard input and a visual display is provided with a semiconductor chip having an arithmetic unit for performing...
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4044398 |
System for interfacing keyboard-operated apparatus with electrical data signals
The information content of electrical data signals is entered into a keyboard-operated device by a system having switches connected in parallel with key-operated calculator switches and circuitry...
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4016560 |
Fractional binary to decimal converter
The present invention relates to a simplified apparatus for converting a ary fraction input into a Natural Binary Coded Decimal (8421 code) and subsequently into a decimal output with the proper...
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4011559 |
Universal binary code converter
The invention relates to a method and apparatus for performing binary code onversion and, in particular, for converting binary input to binary coded decimal (BCD) form. An n-bit decade down counter...
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4001566 |
Floating point calculator with RAM shift register
A calculator utilizing floating point logic by means of registers in the form of random access memories the bit positions of which are sequentially addressable, reversible timing means for...
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3974497 |
Display device
The present invention relates to display devices used as terminal devices for an electronic computer or the like, and more particularly to digital displays in a specific display region on a display...
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3911262 |
Decimal point display circuit
A decimal point display circuit for use in an electronic desk-top calculator, etc. which displays the result of a calculation or an entry number from the higher digits when it exceeds the number of...
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3828174 |
NUMERICAL DATA INPUT APPARATUS
A numerical data input apparatus stores a numerical data signal supplied thereto in a register with a decimal-point fixed at a predetermined place in the register when the input signal is composed...
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3757097 |
EXTRA BIT FOR FLOATING DECIMAL CONTROL AND CORRECTION OF FALSE INTERMEDIATE ARITHMETIC RESULTS
A floating decimal calculator with controls for decimal location and for correction of falsely-coded sums or differences developed during any of the four basic arithmetic operations, these controls...
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3732408 |
OUTPUT DEVICE FOR ELECTRONIC DATA PROCESSING SYSTEMS
In a system for converting binary data into a decimal readout and in which the bits of a succession of binary words are fed in series into a shift register and fed out therefrom in parallel to...
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3692990 |
DECIMAL POINT PROCESSING SYSTEM DEALING WITH OVERFLOW
A decimal point processing system in a calculator capable of arbitrarily setting the decimal point position for the result of an operation within the range of digit indication positions given, and...
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3691358 |
DECIMAL-POINT INDICATING SYSTEM, ESPECIALLY FOR ELECTRONIC CALCULATOR
An electronic calculator or computer with a magnetic-core memory having a number of columns corresponding to the number of digits which may be manipulated and four lines connected with a binary...
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3676656 |
ELECTRONIC DIGITAL SLIDE RULE
An electronic digital slide rule in the form of a small hand-carried, battery powered digital electronic calculator capable of performing substantially all of the mathematical operations performed...
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3657529 |
ENTRY MARK SYSTEM FOR ENTRY AND DISPLAY OF NUMBERS
A calculator having an input register for receiving an input number, an auxiliary register and a decimal point position memory for storing numerical data and showing the number of digits below the...
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3643077 |
ELECTRONIC PRINTING DIGITAL CALCULATOR
A printing electronic digital calculator having a system for translating instructions and decimal data into binary data, a register for receiving and temporarily storing the binary data, a memory...
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3639742 |
NUMBER POSITIONING DISPLAY FOR ELECTRONIC CALCULATING MACHINES
A calculating system employing a numerical display is described with a plurality of number display tubes each having a corresponding register for storing the number to be displayed. Numbers may be...
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3634666 |
ELECTRONIC DESK TOP CALCULATOR HAVING A DELAY LINE AND AUTOMATIC DECIMAL ALIGNMENT
An electronic desk top calculator having a recirculating memory and an arithmetic unit comprising a plurality of single character registers, which are shared with the memory. Data shifting...
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3622768 |
DUAL KEY DEPRESSION FOR DECIMAL POSITION SELECTION
Depression of a register clear key concurrently with depression of a digit key for purposes of selection of the decimal point position in a calculating machine without decimal point selection...
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3614405 |
NUMBER ENTRY SYSTEM
A number entry system for a digital data processor. The system has an input register for receiving input data therein, and an auxiliary register coupled to said input register primarily for use as...
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3575590 |
CALCULATION BY COUNTING WITH DECIMAL-POINT CONTROL APPARATUS
A computer having a plurality of number storage registers. Each register includes a plurality of cold-cathode stepping-tube digit storage stages and one further stage for storing the numerical...
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3548179 |
MINIATURE DESK COMPUTER
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3546676 |
CALCULATOR
An electronic desk top calculator having a recirculating memory and an arithmetic unit comprising a plurality of single character registers, which are shared with the memory. Data shifting...
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3541316 |
CALCULATOR WITH DECIMAL POINT POSITIONING
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3539790 |
CHARACTER ORIENTED DATA PROCESSOR WITH FLOATING DECIMAL POINT MULTIPLICATION
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3526887 |
DIGIT ORDER AND DECIMAL POINT DISPLAY SYSTEM AND CIRCUIT THEREFOR
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3526760 |
SQUARE ROOT CALCULATOR EMPLOYING A MODIFIED SUM OF THE ODD INTEGERS METHOD
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3518629 |
RECIRCULATING MEMORY TIMING
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3513303 |
DESK CALCULATOR FOR PERFORMING ADDITION,SUBTRACTION,MULTIPLICATION AND DIVISION
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3509329 |
CALCULATOR
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3460095 |
METHOD OF USING AN ARITHMETIC CALCULATOR AND CALCULATING MACHINE FOR UTILIZING SAID METHOD
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3405392 |
Electronic calculators
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3391391 |
Computation with variable fractional point readout
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3375356 |
Calculator decimal point alignment apparatus
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3358125 |
Circuit for displaying the decimal location in electronic type arithmetical computing devices, particularly in connection with digital data readout devices on decimal indicators
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3308280 |
Adding and multiplying computer
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3235846 |
Data processing system
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3118056 |
Magnetic core matrix accumulator
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