DE3806067A1 - Pocket calculator - Google Patents

Pocket calculator

Info

Publication number
DE3806067A1
DE3806067A1 DE19883806067 DE3806067A DE3806067A1 DE 3806067 A1 DE3806067 A1 DE 3806067A1 DE 19883806067 DE19883806067 DE 19883806067 DE 3806067 A DE3806067 A DE 3806067A DE 3806067 A1 DE3806067 A1 DE 3806067A1
Authority
DE
Germany
Prior art keywords
operators
operands
display
keyboard
corrected
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.)
Withdrawn
Application number
DE19883806067
Other languages
German (de)
Inventor
Ernst Neubert
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 DE19883806067 priority Critical patent/DE3806067A1/en
Publication of DE3806067A1 publication Critical patent/DE3806067A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • 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

Landscapes

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

Abstract

Pocket calculator, that is an electronic calculator which is built of integrated circuits and microprocessors, with a display, an input keyboard and a mains-independent battery or accumulator power supply, with a memory to store operands and operators which have been entered via the keyboard even beyond the execution of the current calculation. The entered operands and operators can be called from the memory into the display one after another via the keyboard. Preferably, operands and/or operators which have been called into the display can be corrected, and then the whole calculation is executed again with the possibly corrected operands and/or operators.

Description

Die Erfindung betrifft einen Taschenrechner, also einen auf integrierten Schaltkreisen und Mikroprozessoren aufgebauten elektronischen Rechner mit Display, Einga­ betastatur und netzunabhängiger Batterie- oder Akkumu­ latorstromversorgung.The invention relates to a pocket calculator on integrated circuits and microprocessors assembled electronic computer with display, input keyboard and mains-independent battery or accumulator lator power supply.

Taschenrechner haben den Vorteil der jederzeitigen Verfügbarkeit, gegenüber den Tischrechnern aber den Nachteil, daß das Rechenergebnis nicht anhand eines sogleich die Eingaben ausdruckenden Protokollstreifens kontrolliert werden kann.Calculators have the advantage of being available at all times Availability, compared to the desktop computers Disadvantage that the calculation result is not based on a immediately the record of the printout can be controlled.

Es sind zwar bereits Taschenrechner mit einem eingebau­ ten Drucker bekannt, diese konnten sich aber nicht durchsetzen.There are already built-in calculators ten printers known, but could not push through.

Der Erfindung liegt die Aufgabe zugrunde, einen Ta­ schenrechner zu schaffen, der eine Überprüfung der Eingaben ermöglicht, ohne daß ein Protokollausdruck erfolgt.The invention has for its object a Ta to create a computer that checks the  Allows input without a log printout he follows.

Erfindungsgemäß wird diese Aufgabe gelöst durch Spei­ cher zum Speichern der über die Tastatur eingegebenen Operanden und Operatoren auch über die Durchführung des jeweiligen Rechenvorgangs hinaus, wobei die eingegebe­ nen Operanden und Opertoren über die Tastatur nachein­ ander aus dem Speicher in die Anzeige aufgerufen werden können.According to the invention this object is achieved by Spei to save the data entered via the keyboard Operands and operators also about performing the respective calculation process, the entered operands and operators using the keyboard be called up from the memory into the display can.

Eine bevorzugte Ausführungsform zeichnet sich dadurch aus, daß in das Display aufgerufene Operanden und/oder Operatoren korrigiert werden können, woraufhin der gesamte Rechenvorgang mit den ggf. korrigierten Operan­ den und/oder Operatoren erneut durchgeführt wird.A preferred embodiment is characterized by this that operands and / or Operators can be corrected, whereupon the entire calculation process with the operan corrected if necessary the and / or operators is performed again.

Erfindungsgemäß wird also ein Taschenrechner vorge­ schlagen, bei dem die durch Eingabe der Symbole für die jeweilige mathematische Operation (+, - . . . ) (polnische Notation) oder aber durch die Betätigung der Enter-Taste (umgekehrte polnische Notation) abgeschlos­ sene Eingabe der Operanden jeweils in Speichern, vor­ zugsweise einem Schieberegister, über den eigentlichen Rechenvorgang hinaus abgespeichert werden. Dies ermög­ licht es, das auf dem Display angezeigte Rechenergebnis dadurch zu kontrollieren, daß die einzelnen Eingaben nacheinander in das Display aufgerufen werden.According to the invention, a calculator is therefore featured hit, by entering the symbols for the respective mathematical operation (+, -...) (Polish notation) or by pressing the Enter key (reverse Polish notation) completed The input of the operands in each case in memory preferably a shift register, over the actual one Calculation process can also be saved. This enables if it is, the calculation result shown on the display by checking that the individual entries can be called up one after the other in the display.

Bei einer besonders bevorzugten Ausbildung der Erfin­ dung können die jeweils in das Display aufgerufenen Operanden und/oder Operatoren korrigiert werden, worauf­ hin der gesamte Rechenvorgang anhand der korrigierten und der eingespeicherten Eingaben wiederholt wird. Auf diese Weise ist es möglich, bei der falschen Eingabe lediglich eines Wertes nach dessen Korrektur unmittel­ bar das richtige Rechenergebnis zu gewinnen.In a particularly preferred training of the Erfin can be called up on the display Operands and / or operators are corrected for what the entire calculation process based on the corrected and the stored entries are repeated. On this way it is possible with the wrong input only of a value immediately after its correction to get the right calculation result.

Claims (2)

1. Taschenrechner, also auf integrierten Schaltkrei­ sen und Mikroprozessoren aufgebauter elektronischer Rechner mit Display, Eingabetastatur und netzunabhängi­ ger Batterie- oder Akkumulatorstromversorgung, gekenn­ zeichnet durch Speicher zum Speichern der über die Tastatur eingegebenen Operanden und Operatoren auch über die Durchführung des jeweiligen Rechenvorgangs hinaus, wobei die eingegebenen Operanden und Opertoren über die Tastatur nacheinander aus dem Speicher in die Anzeige aufgerufen werden können.1. Pocket calculator, that is to say on integrated circuits and microprocessors, built-in electronic computer with display, input keyboard and mains -independent battery or accumulator power supply, characterized by memory for storing the operands and operators entered via the keyboard and also beyond the execution of the respective calculation process, whereby the entered operands and operators can be called up one after the other from the memory into the display using the keyboard. 2. Taschenrechner nach Anspruch 1, dadurch gekenn­ zeichnet, daß in das Display aufgerufene Operanden und/oder Operatoren korrigiert werden können, woraufhin der gesamte Rechenvorgang mit den ggf. korrigierten Operanden und/oder Operatoren erneut durchgeführt wird.2. Calculator according to claim 1, characterized indicates that operands called in the display and / or operators can be corrected, whereupon the entire calculation process with any corrected Operands and / or operators is performed again.
DE19883806067 1988-02-26 1988-02-26 Pocket calculator Withdrawn DE3806067A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19883806067 DE3806067A1 (en) 1988-02-26 1988-02-26 Pocket calculator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19883806067 DE3806067A1 (en) 1988-02-26 1988-02-26 Pocket calculator

Publications (1)

Publication Number Publication Date
DE3806067A1 true DE3806067A1 (en) 1989-08-31

Family

ID=6348232

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19883806067 Withdrawn DE3806067A1 (en) 1988-02-26 1988-02-26 Pocket calculator

Country Status (1)

Country Link
DE (1) DE3806067A1 (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2950430A1 (en) * 1979-12-14 1981-07-02 Casio Computer Co., Ltd., Tokyo Display of unused programmed locations in small computers - has unused location addresses identified in read-write memory for display
DE3242627A1 (en) * 1981-11-18 1983-05-26 Sharp K.K., Osaka PROGRAMMABLE ELECTRONIC CALCULATOR WITH A DISPLAY DEVICE
DE3508548A1 (en) * 1984-03-13 1985-09-19 Sharp K.K., Osaka ELECTRONIC POCKET CALCULATOR

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2950430A1 (en) * 1979-12-14 1981-07-02 Casio Computer Co., Ltd., Tokyo Display of unused programmed locations in small computers - has unused location addresses identified in read-write memory for display
DE3242627A1 (en) * 1981-11-18 1983-05-26 Sharp K.K., Osaka PROGRAMMABLE ELECTRONIC CALCULATOR WITH A DISPLAY DEVICE
DE3508548A1 (en) * 1984-03-13 1985-09-19 Sharp K.K., Osaka ELECTRONIC POCKET CALCULATOR

Similar Documents

Publication Publication Date Title
DE112008002158B4 (en) Method and system for multiplying large numbers
DE2364408B2 (en) Circuit arrangement for addressing the memory locations of a memory consisting of several chips
DE19635107A1 (en) A method of testing a hardware-based decomposition function
DE2365892A1 (en) COMPUTER KEYBOARD
DE2440072A1 (en) ELECTRONIC CALCULATOR
DE1162111B (en) Floating point arithmetic facility
DE2453040B2 (en) Programmable electronic calculator
DE2814078A1 (en) ADDING CONNECTION WITH TEMPORARY INTERMEDIATE STORAGE OF THE TRANSFER
DE2726860B2 (en) Arrangement for preset unit prices at a cash register
DE2354042A1 (en) DESKTOP CALCULATOR
DE102007056104A1 (en) Method and device for multiplication of binary operands
DE2824296A1 (en) CHANGE CALCULATION DEVICE
DE3806067A1 (en) Pocket calculator
DE29713855U1 (en) Conversion module
DE1945783A1 (en) Digit checking device for an electronic device for recording transactions, in particular business transactions
DE3000012A1 (en) CIRCUIT ARRANGEMENT FOR EXECUTING A TRANSMISSION COMMAND IN A DATA PROCESSING SYSTEM
DE2809341A1 (en) SYSTEM FOR CHECKING THE VALIDITY OF A CODE GROUP READ BY A MACHINE FROM A DOCUMENT
DE2264184B2 (en) ELECTRIC DESKTOP CALCULATOR
DE1222290B (en) Binary computing device for the formation and accumulation of products
DE2651447C3 (en) Electronic cash register
DE2108960A1 (en) Electronic calculator
GB1192240A (en) An Electronic Calculator.
DE2335719A1 (en) CONTROL SYSTEM FOR TRANSFERRING DATA ENTERED IN AN ELECTRONIC DESKTOP CALCULATOR
DE2327792A1 (en) TIME MEASUREMENT IN A DATA PROCESSING SYSTEM
DE2158833B2 (en) Device on a key-operated electronic computer for performing series calculations

Legal Events

Date Code Title Description
OP8 Request for examination as to paragraph 44 patent law
8130 Withdrawal