JPS57197918A - Da converting circuit - Google Patents

Da converting circuit

Info

Publication number
JPS57197918A
JPS57197918A JP8237781A JP8237781A JPS57197918A JP S57197918 A JPS57197918 A JP S57197918A JP 8237781 A JP8237781 A JP 8237781A JP 8237781 A JP8237781 A JP 8237781A JP S57197918 A JPS57197918 A JP S57197918A
Authority
JP
Japan
Prior art keywords
code
output
data
inputted
bit
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
JP8237781A
Other languages
Japanese (ja)
Inventor
Ryosuke Hirose
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.)
Fujitsu Ltd
Original Assignee
Fujitsu Ltd
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 Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP8237781A priority Critical patent/JPS57197918A/en
Publication of JPS57197918A publication Critical patent/JPS57197918A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M1/00—Analogue/digital conversion; Digital/analogue conversion
    • H03M1/66—Digital/analogue converters

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Analogue/Digital Conversion (AREA)

Abstract

PURPOSE:To simplify constitution by switching the functions of a code controlling circuit for switching between the D/A conversion of data having a code and that of data having no code, and thus achieving switching at a digital part composed of an analog part. CONSTITUTION:During the input of data with a code, the code bit is inputted to a code controlling circuit to control the output of a selector SEL according to the code. The data with the code is converted by a code converter CDC into a binary code, which is stored in a register. The output S1 of the control circuit SC is applied as ''1'' to a D/A converter DAC when it is positive, and the output S2 is applied as ''0'' when it is negative. During the input of data having no code, the output S2 is ''0'' and the selector SEL selects an output Q; and the output S1 is a bit which corresponds to the code bit. When the data with the code is inputted, a 0-+ or -5V output is generated at an output OUT1 and when the data having no code is inputted, a 0-10V output is generated at an output OUT2.
JP8237781A 1981-05-29 1981-05-29 Da converting circuit Pending JPS57197918A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8237781A JPS57197918A (en) 1981-05-29 1981-05-29 Da converting circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8237781A JPS57197918A (en) 1981-05-29 1981-05-29 Da converting circuit

Publications (1)

Publication Number Publication Date
JPS57197918A true JPS57197918A (en) 1982-12-04

Family

ID=13772886

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8237781A Pending JPS57197918A (en) 1981-05-29 1981-05-29 Da converting circuit

Country Status (1)

Country Link
JP (1) JPS57197918A (en)

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