US 4,049,955 AGranted

Temporary memory for calculator-recorder system

AssigneeCampbell Taggart, Inc.

InventorsHal Harris, Joseph S. Foreman, Jr.

Life of this patent

Estimating the term…

Loading patent…

Abstract

A temporary memory means for a calculator-recorder system in which information related to each digit numerical data from the calculator is stored in a separate stage of a memory bank and information related to each function of a mathematical function of the calculator is stored in a separate stage of the memory bank, the numerical data, in decimal form, is converted to binary form prior to storage and reconverted to decimal form after storage, the function data, in decimal form, is converted to binary form and then reconverted to decimal form prior to storage. The transmission means can also include means for preventing the reception of additional numerical data by the recorder if a mathematical function is entered into the calculator before the recorder can receive and record all of the numerical data previously entered into the calculator.

Claims17

Dependent claims

In a calculator-recorder system, wherein the output information from the calculator is in decimal form and the recorder receives and records said information, the improvement comprising;

information transmission means for transmitting said output information from said calculator to the input of said recorder, including;
memory bank means for temporary storing said output information, the memory bank means having nine stages for storing the numerical data portion of the output information from the calculator and two stages for storing the function data portion of the output information from the calculator;
binary counter means for converting said output information from said calculator to information in binary form prior to storage in the nine stages of the memory bank;
and a pair of binary to decimal decoders, said numerical data information in binary form is converted to information in decimal form after retrieval from said nine stages of said memory bank by a first of said pair of binary to decimal decoders, the function data portion of said output information from said calculator is converted to information in binary form by said binary counter means and said function data in binary form is reconverted to decimal form prior to the storage in two stages of said memory bank by the second of said pair of binary to decimal decoders.

1 more element

In a calculator-recorder system, wherein the output information from the calculator is in decimal form and the recorder receives and records said information, said calculator having a sector wheel means having a sector for each of the digits of the decimal system and sequentially scans the calculator input for all of each digit entered into said calculator, the improvement comrising;

information transmission means for transmitting said output information from said calculator to the input of said recorder, including;
memory bank means for temporarily storing said output information, the memory bank having a memory stage for each of said digits of said decimal system;
binary counter means for converting said output information from said calculator to information in binary form, wherein said sector wheel means generates a signal for each of said digits entered into said calculator and sends said signal through the binary counter means to activate the corresponding one of said memory stages and enter into said corresponding memory stage the total number of said each digit which has been entered into said calculator;
and binary to decimal decoder means for converting said information in binary form to information in decimal form prior to the reception of said information by said recorder.

1 more element

In a calculator-recorder system, wherein the output information from the calculator is in decimal form and the recorder receives and records said information, the improvement comprising:

information transmission means for transmitting said output information from said calculator to the input of said recorder, including;
a cam start means for receiving and being energized by a signal from a key of the calculator;
a motor start relay means for starting the recorder;
memory bank means for temporarily storing said output information, the memory bank having a separate memory stage for storing information corresponding to each digit of the numerical data portion of the output information from the calculator and a separate memory stage for storing information corresponding to each function of the function data portion of the output information from the calculator;
the recorder means includes retrieval means for sequentially withdrawing information from each of said memory stages representing digits of said numerical data, binary counter means for converting said output information from said calculator to information in binary form, and binary to decimal decoder means for converting said information in binary form to information in decimal form prior to the reception of said information by said recorder;
reset means operatively coupled to said motor shaft relay for generating a reset signal after said numerical data has been withdrawn from all of said memory stages storing said information corresponding to said each digit of said numerical system and resetting said motor start relay and memory stages representing digits of said numerical data to ready said memory stages for a new set of numerical data, and lock-up means operatively coupled to said key of said calculator and said motor start relay to prevent the reception of additional data by said recorder when a signal from said key is generated prior to the resetting of said motor start relay and said numerical data stages of said memory bank.

3 more elements

In a calculator-recorder system, wherein the calculator is capable of being operated at a speed greater than the speed at which the recorder can receive and record the numerical data of the output information from the recorder, the improvement comprising;

information transmission means operatively coupling the output of said calculator to the input of said recorder and including:
a cam start means for receiving and being energized by a signal from a mathematical function key of the calculator and a motor start relay means for starting the recorder;
a memory bank means including a separate memory stage for storing information corresponding to each digit of the numerical data portion of the output information from the calculator and a separate memory stage for storing information corresponding to each function of the function data portion of the output information from the calculator;
retrieval means in said recorder means for sequentially withdrawing information from each of said memory stages representing digits of said numerical data;
reset means operatively coupled to said motor start relay for generating a reset signal after said numerical data has been withdrawn from all of said memory stages storing said information corresponding to said each digit of said numerical data and resetting said motor start relay and said memory stages representing digits of said numerical data to ready said memory stages for a new set of numerical data;
and lock-up means operatively coupled to said key of said calculator and said motor start relay to prevent the reception of additional data by said recorder when a signal from said key is generated prior to the resetting of said motor start relay and said numerical data stages of said memory bank.

3 more elements

Dependencies are inferred from the claim text.