JPS56153839A - Pla logical operation circuit - Google Patents

Pla logical operation circuit

Info

Publication number
JPS56153839A
JPS56153839A JP5738680A JP5738680A JPS56153839A JP S56153839 A JPS56153839 A JP S56153839A JP 5738680 A JP5738680 A JP 5738680A JP 5738680 A JP5738680 A JP 5738680A JP S56153839 A JPS56153839 A JP S56153839A
Authority
JP
Japan
Prior art keywords
circuit
pla
gates
given
output
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
JP5738680A
Other languages
Japanese (ja)
Inventor
Kiyoshi Hayamizu
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.)
NEC Corp
Original Assignee
NEC Corp
Nippon Electric Co 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 NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP5738680A priority Critical patent/JPS56153839A/en
Publication of JPS56153839A publication Critical patent/JPS56153839A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K19/00—Logic circuits, i.e. having at least two inputs acting on one output; Inverting circuits
    • H03K19/02—Logic circuits, i.e. having at least two inputs acting on one output; Inverting circuits using specified components
    • H03K19/173—Logic circuits, i.e. having at least two inputs acting on one output; Inverting circuits using specified components using elementary logic circuits as components
    • H03K19/177—Logic circuits, i.e. having at least two inputs acting on one output; Inverting circuits using specified components using elementary logic circuits as components arranged in matrix form
    • H03K19/17704—Logic circuits, i.e. having at least two inputs acting on one output; Inverting circuits using specified components using elementary logic circuits as components arranged in matrix form the logic functions being realised by the interconnection of rows and columns
    • H03K19/17708—Logic circuits, i.e. having at least two inputs acting on one output; Inverting circuits using specified components using elementary logic circuits as components arranged in matrix form the logic functions being realised by the interconnection of rows and columns using an AND matrix followed by an OR matrix, i.e. programmable logic arrays

Landscapes

  • Physics & Mathematics (AREA)
  • Mathematical Physics (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Computing Systems (AREA)
  • General Engineering & Computer Science (AREA)
  • Logic Circuits (AREA)

Abstract

PURPOSE:To operate plural programmable logic array PLA circuits with a small number of input and output pins, by providing plural PLA circuits and a selecting circuit which connects plural input and output lines by the selecting signal from the external. CONSTITUTION:When the state of selecting signal S1 is 1, AND gates 7 and 9 are opened, and input signals I1-I3 are given to PLA circuit 2, and a signal corresponding to these input signals is outputted from circuit 2 through AND gate 9. At this time, the 0 level obtained by inverting signal S1 by inverter 3 is given to AND gates 6 and 8, and these gates are closed, and signals I1-I3 are not given to PLA circuit 1. When S1 becomes 0, gates 6 and 8 are opened, and an output corresponding to input signals I1-I3 is obtained from circuit 1, and the output is not outputted from circuit 2.
JP5738680A 1980-04-30 1980-04-30 Pla logical operation circuit Pending JPS56153839A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5738680A JPS56153839A (en) 1980-04-30 1980-04-30 Pla logical operation circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5738680A JPS56153839A (en) 1980-04-30 1980-04-30 Pla logical operation circuit

Publications (1)

Publication Number Publication Date
JPS56153839A true JPS56153839A (en) 1981-11-28

Family

ID=13054164

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5738680A Pending JPS56153839A (en) 1980-04-30 1980-04-30 Pla logical operation circuit

Country Status (1)

Country Link
JP (1) JPS56153839A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58109936A (en) * 1981-12-17 1983-06-30 ウェスターン　エレクトリック　カムパニー，インコーポレーテッド Stored program controlled type machine
JPH01138815A (en) * 1987-11-26 1989-05-31 Konica Corp Signal processing unit
JPH01501671A (en) * 1986-11-07 1989-06-08 コンカーレント・ロジック・インコーポレーテッド Programmable logic cells and arrays
JPH08256053A (en) * 1985-12-06 1996-10-01 Advanced Micro Devices Inc Programable logic array device

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58109936A (en) * 1981-12-17 1983-06-30 ウェスターン　エレクトリック　カムパニー，インコーポレーテッド Stored program controlled type machine
JPH08256053A (en) * 1985-12-06 1996-10-01 Advanced Micro Devices Inc Programable logic array device
JPH01501671A (en) * 1986-11-07 1989-06-08 コンカーレント・ロジック・インコーポレーテッド Programmable logic cells and arrays
JPH01138815A (en) * 1987-11-26 1989-05-31 Konica Corp Signal processing unit

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