JPS55146558A - Desk computer - Google Patents

Desk computer

Info

Publication number
JPS55146558A
JPS55146558A JP5263079A JP5263079A JPS55146558A JP S55146558 A JPS55146558 A JP S55146558A JP 5263079 A JP5263079 A JP 5263079A JP 5263079 A JP5263079 A JP 5263079A JP S55146558 A JPS55146558 A JP S55146558A
Authority
JP
Japan
Prior art keywords
turned
gate
input
symbol
signal
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
JP5263079A
Other languages
Japanese (ja)
Inventor
Junichi Ishiwata
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.)
Canon Inc
Original Assignee
Canon Inc
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 Canon Inc filed Critical Canon Inc
Priority to JP5263079A priority Critical patent/JPS55146558A/en
Publication of JPS55146558A publication Critical patent/JPS55146558A/en
Pending legal-status Critical Current

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  • Calculators And Similar Devices (AREA)

Abstract

PURPOSE: To improve efficiency of calculation processing, by adding a function which displays a calculating state in an indicator of a desk computer in order that a process of calculation can be grasped by only seeing the display.
CONSTITUTION: As an exercise, C12+3= is executed. At first, when a clear key C is pushed, a signal is input to the reset side of FFs 12W18, therefore all the symbols are turned OFF by reset. After that, when a numeral of "1" is put, FF18 is set by a signal from the OR gate 34, and a symbol of N1 is turned ON by a signal through the AND gate 20. Since the status is not changed even if "2" is further input, N1 remains turned ON. Subsequently, when "+" is input, FF15 is set and a symbol of "+" is turned ON, but FF18 is reset through the OR gate 31. Accordingly, N1 is turned OFF. When "3" is input, FF18 is set over again, therefore the AND gate 19 is opened and a symbol N2 is turned ON.
COPYRIGHT: (C)1980,JPO&Japio
JP5263079A 1979-04-28 1979-04-28 Desk computer Pending JPS55146558A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5263079A JPS55146558A (en) 1979-04-28 1979-04-28 Desk computer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5263079A JPS55146558A (en) 1979-04-28 1979-04-28 Desk computer

Publications (1)

Publication Number Publication Date
JPS55146558A true JPS55146558A (en) 1980-11-14

Family

ID=12920131

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5263079A Pending JPS55146558A (en) 1979-04-28 1979-04-28 Desk computer

Country Status (1)

Country Link
JP (1) JPS55146558A (en)

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