DE3530208A1 - Code conversion circuit for the conversion of BCD-8421 code into decimal one-out-of-ten code - Google Patents

Code conversion circuit for the conversion of BCD-8421 code into decimal one-out-of-ten code

Info

Publication number
DE3530208A1
DE3530208A1 DE19853530208 DE3530208A DE3530208A1 DE 3530208 A1 DE3530208 A1 DE 3530208A1 DE 19853530208 DE19853530208 DE 19853530208 DE 3530208 A DE3530208 A DE 3530208A DE 3530208 A1 DE3530208 A1 DE 3530208A1
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DE
Germany
Prior art keywords
code
circuit
inputs
circuits
conversion
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Withdrawn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
DE19853530208
Other languages
German (de)
Inventor
Paul Merkle
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 DE19853530208 priority Critical patent/DE3530208A1/en
Publication of DE3530208A1 publication Critical patent/DE3530208A1/en
Withdrawn legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M7/00—Conversion of a code where information is represented by a given sequence or number of digits to a code where the same, similar or subset of information is represented by a different sequence or number of digits
    • H03M7/14—Conversion to or from non-weighted codes
    • H03M7/20—Conversion to or from n-out-of-m codes
    • H03M7/22—Conversion to or from n-out-of-m codes to or from one-out-of-m codes

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  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)

Abstract

The code conversion circuit according to the subject-matter of the invention has the advantage over other BCD-8421/one-out-of-ten conversion circuits that it has no AND circuits with more than 2 inputs and has only 12 AND circuits with 2 inputs each. <IMAGE>

Description

Gegenstand der Erfindung ist eine Umcodierschaltung für die Umcodierung von BCD-8421-codierten Dezimalziffern in Dezimal- 1-aus-10-codierte Dezimalziffern. Erfindungsgemäß hat diese Umcodierschaltung keine Und-Schaltungen mit 4 Eingängen, sondern nur Und-Schaltungen mit 2 Eingängen und 2 Oder- Schaltungen und 3 Negier-Schaltungen.The invention relates to a recoding circuit for the Recoding BCD-8421 encoded decimal digits to decimal 1-out-of-10 encoded decimal digits. According to the invention Recoding circuit no AND circuits with 4 inputs, but only AND circuits with 2 inputs and 2 OR Circuits and 3 Negier circuits.

Diese BCD-8421-Dezimal-1-aus-10-Umcodierschaltung ist in Fig. 1 dargestellt.This BCD-8421 decimal 1 out of 10 recoding circuit is shown in FIG. 1.

Diese BCD-8421-Dezimal-1-aus-10-Umcodierschaltung besteht aus 12 Und-Schaltungen 1 bis 12 mit je 2 Eingängen und der Oder- Schaltung 13 mit 4 Eingängen und der Oder-Schaltung 14 mit 5 Eingängen und 3 Negier-Schaltungen 15 bis 17 und den zuge­ hörigen Leitungen. Die Eingänge M sind mit den Buchstaben A bis D gekennzeichnet. Der Eingang A hat die Wertigkeit 1; der Eingang B hat die Wertigkeit 2; der Eingang C hat die Wertigkeit 4; der Eingang D hat die Wertigkeit 8. Die Aus­ gänge N sind mit den zugehörigen Zahlenwerten (Ziffern 0 bis 9) gekennzeichnet.This BCD-8421 decimal 1 out of 10 recoding circuit consists of 12 AND circuits 1 to 12 with 2 inputs each and the OR circuit 13 with 4 inputs and the OR circuit 14 with 5 inputs and 3 negation circuits 15 to 17 and the associated lines. The inputs M are marked with the letters A to D. The input A has the value 1; input B has the value 2; input C has a value of 4; input D has a value of 8. Outputs N are marked with the associated numerical values (digits 0 to 9 ).

Claims (5)

1. Umcodierschaltung für die Umcodierung von BCD-8421-co­ dierten Dezimalziffern in dezimal-1-aus-10-codierte Dezimalziffern, dadurch gekennzeichnet, daß sie keine Und-Schaltungen mit 4 Eingängen aufweist.1. transcoding circuit for transcoding BCD-8421-coded decimal digits into decimal-1-out of 10-coded decimal digits, characterized in that it has no AND circuits with 4 inputs. 2. Umcodierschaltung nach Anspruch 1, dadurch gekennzeich­ net, daß sie 2 Sperr-Schaltungen (21 und 22) aufweist.2. transcoding circuit according to claim 1, characterized in that it has 2 blocking circuits ( 21 and 22 ). 3. Umcodierschaltung nach Anspruch 1 und 2, dadurch ge­ kennzeichnet, daß von der Sperr-Schaltung (21) die Lei­ tungen für die Ziffern 1 und 2 und 4 und 8 gesperrt werden, wenn die Oder-Schaltung (14) an einem ihrer Eingänge H- Potential hat.3. transcoding circuit according to claim 1 and 2, characterized in that the locking lines ( 21 ), the lines for the numbers 1 and 2 and 4 and 8 are blocked when the OR circuit ( 14 ) at one of its inputs H potential. 4. Umcodierschaltung nach Anspruch 1 bis 3, dadurch gekenn­ zeichnet, daß von der Sperr-Schaltung (22) die Leitungen für die Ziffern 3 und 5 und 6 gesperrt werden, wenn die Negier-Schaltung (17) an ihrem Eingang H-Potential hat.4. recoding circuit according to claim 1 to 3, characterized in that the lines for the digits 3 and 5 and 6 are blocked by the blocking circuit ( 22 ) when the negating circuit ( 17 ) has H potential at its input . 5. Umcodierschaltung nach Anspruch 1 oder nach Anspruch 1 oder 2 oder nach Anspruch 1 bis 3 oder nach Anspruch 1 bis 4, dadurch gekennzeichnet, daß sie aus 12 Und-Schaltungen (1 bis 12) mit je 2 Eingängen und einer Oder-Schaltung (13) mit 4 Eingängen und einer Oder-Schaltung (14) mit 5 Eingängen und 3 Negier-Schaltungen (15 bis 17) und den zugehörigen Leitungen besteht.5. recoding circuit according to claim 1 or according to claim 1 or 2 or according to claim 1 to 3 or according to claim 1 to 4, characterized in that it consists of 12 AND circuits ( 1 to 12 ) each with 2 inputs and an OR circuit ( 13 ) with 4 inputs and an OR circuit ( 14 ) with 5 inputs and 3 negation circuits ( 15 to 17 ) and the associated lines.
DE19853530208 1985-08-23 1985-08-23 Code conversion circuit for the conversion of BCD-8421 code into decimal one-out-of-ten code Withdrawn DE3530208A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19853530208 DE3530208A1 (en) 1985-08-23 1985-08-23 Code conversion circuit for the conversion of BCD-8421 code into decimal one-out-of-ten code

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19853530208 DE3530208A1 (en) 1985-08-23 1985-08-23 Code conversion circuit for the conversion of BCD-8421 code into decimal one-out-of-ten code

Publications (1)

Publication Number Publication Date
DE3530208A1 true DE3530208A1 (en) 1987-03-05

Family

ID=6279223

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19853530208 Withdrawn DE3530208A1 (en) 1985-08-23 1985-08-23 Code conversion circuit for the conversion of BCD-8421 code into decimal one-out-of-ten code

Country Status (1)

Country Link
DE (1) DE3530208A1 (en)

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