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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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
3548179 MINIATURE DESK COMPUTER  
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...
3541316 CALCULATOR WITH DECIMAL POINT POSITIONING  
3539790 CHARACTER ORIENTED DATA PROCESSOR WITH FLOATING DECIMAL POINT MULTIPLICATION  
3526887 DIGIT ORDER AND DECIMAL POINT DISPLAY SYSTEM AND CIRCUIT THEREFOR  
3526760 SQUARE ROOT CALCULATOR EMPLOYING A MODIFIED SUM OF THE ODD INTEGERS METHOD  
3518629 RECIRCULATING MEMORY TIMING  
3513303 DESK CALCULATOR FOR PERFORMING ADDITION,SUBTRACTION,MULTIPLICATION AND DIVISION  
3509329 CALCULATOR  
3460095 METHOD OF USING AN ARITHMETIC CALCULATOR AND CALCULATING MACHINE FOR UTILIZING SAID METHOD  
3405392 Electronic calculators  
3391391 Computation with variable fractional point readout  
3375356 Calculator decimal point alignment apparatus  
3358125 Circuit for displaying the decimal location in electronic type arithmetical computing devices, particularly in connection with digital data readout devices on decimal indicators  
3308280 Adding and multiplying computer  
3235846 Data processing system  
3118056 Magnetic core matrix accumulator  
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