JPS5528141A - Memory unit of electronic computer - Google Patents

Memory unit of electronic computer

Info

Publication number
JPS5528141A
JPS5528141A JP9984478A JP9984478A JPS5528141A JP S5528141 A JPS5528141 A JP S5528141A JP 9984478 A JP9984478 A JP 9984478A JP 9984478 A JP9984478 A JP 9984478A JP S5528141 A JPS5528141 A JP S5528141A
Authority
JP
Japan
Prior art keywords
read out
designated
logic
memory unit
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
JP9984478A
Other languages
Japanese (ja)
Inventor
Tsugio Kitatsume
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP9984478A priority Critical patent/JPS5528141A/en
Publication of JPS5528141A publication Critical patent/JPS5528141A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To reduce the capacity of memory unit and to decrease the processing time, by converting the designated bit from one word read out into the designated logic and performing output with the logic as it is read out for other bits.
CONSTITUTION: To the instruction of one time outputted from CPU to the memory unit 1, the one word designated is read out from the unit 1. Further, the conversion circuit consisting of the selection circuit 2, exclusive OR gate 3, decode circuit 4, and gate circuit 5, converts the designated bit in one word read out into designated ligic. Other bits are outputted with the logic as they are read out, and the output is written in the logic 1. Thus, the write-in instruction of one time can oparate an arbitrary one bit, allowing to reduce the capacity of the unit 1 and to decrease the processing time.
COPYRIGHT: (C)1980,JPO&Japio
JP9984478A 1978-08-16 1978-08-16 Memory unit of electronic computer Pending JPS5528141A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9984478A JPS5528141A (en) 1978-08-16 1978-08-16 Memory unit of electronic computer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9984478A JPS5528141A (en) 1978-08-16 1978-08-16 Memory unit of electronic computer

Publications (1)

Publication Number Publication Date
JPS5528141A true JPS5528141A (en) 1980-02-28

Family

ID=14258103

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9984478A Pending JPS5528141A (en) 1978-08-16 1978-08-16 Memory unit of electronic computer

Country Status (1)

Country Link
JP (1) JPS5528141A (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57103547A (en) * 1980-12-19 1982-06-28 Toshiba Corp Bit word access circuit
JPS5960658A (en) * 1982-09-30 1984-04-06 Fujitsu Ltd Semiconductor storage device provided with logical function
JPS5977557A (en) * 1982-10-27 1984-05-04 Yaskawa Electric Mfg Co Ltd Bit access circuit
JPS6029860A (en) * 1983-07-18 1985-02-15 Fuji Electric Co Ltd Updating method of data
JPS6194143A (en) * 1984-10-15 1986-05-13 Matsushita Electric Ind Co Ltd Data transfer device
JPS63192170A (en) * 1987-02-05 1988-08-09 Furuno Electric Co Ltd Picture memory circuit
JPH02146641A (en) * 1988-11-29 1990-06-05 Nec Corp Memory device
JPH0694029A (en) * 1990-09-07 1994-04-05 Torrington Co:The Bearing seat encoder mount for sensor device

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57103547A (en) * 1980-12-19 1982-06-28 Toshiba Corp Bit word access circuit
JPS5960658A (en) * 1982-09-30 1984-04-06 Fujitsu Ltd Semiconductor storage device provided with logical function
JPH0472255B2 (en) * 1982-09-30 1992-11-17 Fujitsu Ltd
JPS5977557A (en) * 1982-10-27 1984-05-04 Yaskawa Electric Mfg Co Ltd Bit access circuit
JPS6029860A (en) * 1983-07-18 1985-02-15 Fuji Electric Co Ltd Updating method of data
JPS6194143A (en) * 1984-10-15 1986-05-13 Matsushita Electric Ind Co Ltd Data transfer device
JPS63192170A (en) * 1987-02-05 1988-08-09 Furuno Electric Co Ltd Picture memory circuit
JPH02146641A (en) * 1988-11-29 1990-06-05 Nec Corp Memory device
JPH0694029A (en) * 1990-09-07 1994-04-05 Torrington Co:The Bearing seat encoder mount for sensor device

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