UST101701I4 - Portable programmable calculator - Google Patents

Portable programmable calculator Download PDF

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Publication number
UST101701I4
UST101701I4 US06/182,161 US18216180A UST101701I4 US T101701 I4 UST101701 I4 US T101701I4 US 18216180 A US18216180 A US 18216180A US T101701 I4 UST101701 I4 US T101701I4
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US
United States
Prior art keywords
calculator
magnetic cards
display
processor
cards
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
US06/182,161
Inventor
William E. Egbert
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to US06/182,161 priority Critical patent/UST101701I4/en
Application granted granted Critical
Publication of UST101701I4 publication Critical patent/UST101701I4/en
Pending legal-status Critical Current

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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F15/00—Digital computers in general; Data processing equipment in general
    • G06F15/02—Digital computers in general; Data processing equipment in general manually operated with input through keyboard and computation using a built-in program, e.g. pocket calculators
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F15/00—Digital computers in general; Data processing equipment in general
    • G06F15/04—Digital computers in general; Data processing equipment in general programmed simultaneously with the introduction of data to be processed, e.g. on the same record carrier

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  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Computing Systems (AREA)
  • Calculators And Similar Devices (AREA)

Abstract

Two battery-powered hand-held programmable calculators for performing arithmetic, trigonometric and logarithmic functions and displaying the results thereof are provided with the capability of being fully programmable via magnetic cards or a keyboard. Through a unique transmographic coding scheme, programs coded on one embodiment may be executed on a second embodiment even though the key codes for the respective functions are dissimilar. In one embodiment, a processor distinguishes between magnetic cards containing coded instructions and cards containing data. The calculator prompts the user via the display when additional cards are needed to form a complete set of program instructions. The processor, registers, and display may be initialized by control words on magnetic cards. During program execution, the calculator can pause to permit data entry from the keyboard or from magnetic cards. The operator may also cause the calculator to pause and display the data of an intermediate calculation. A number of stack and program review capabilities are provided, including the ability to accelerate, temporarily suspend, or indefinitely suspend review. The operator may select either of two sets of registers for access by the processor. In one embodiment, a hard copy printer is provided for creating a permanent record of the calculations.
US06/182,161 1976-07-01 1980-08-28 Portable programmable calculator Pending UST101701I4 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US06/182,161 UST101701I4 (en) 1976-07-01 1980-08-28 Portable programmable calculator

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
US70171876A 1976-07-01 1976-07-01
US81793477A 1977-07-22 1977-07-22
US93320478A 1978-08-14 1978-08-14
US4697179A 1979-06-08 1979-06-08
US06/182,161 UST101701I4 (en) 1976-07-01 1980-08-28 Portable programmable calculator

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
US4697179A Continuation 1976-07-01 1979-06-08

Publications (1)

Publication Number Publication Date
UST101701I4 true UST101701I4 (en) 1982-04-06

Family

ID=27489116

Family Applications (1)

Application Number Title Priority Date Filing Date
US06/182,161 Pending UST101701I4 (en) 1976-07-01 1980-08-28 Portable programmable calculator

Country Status (1)

Country Link
US (1) UST101701I4 (en)

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