JPS5719841A - Operation device - Google Patents

Operation device

Info

Publication number
JPS5719841A
JPS5719841A JP9342880A JP9342880A JPS5719841A JP S5719841 A JPS5719841 A JP S5719841A JP 9342880 A JP9342880 A JP 9342880A JP 9342880 A JP9342880 A JP 9342880A JP S5719841 A JPS5719841 A JP S5719841A
Authority
JP
Japan
Prior art keywords
data
shift
decided
zero
circuit
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
JP9342880A
Other languages
Japanese (ja)
Inventor
Hirofumi Kasugai
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 JP9342880A priority Critical patent/JPS5719841A/en
Publication of JPS5719841A publication Critical patent/JPS5719841A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F5/00—Methods or arrangements for data conversion without changing the order or content of the data handled
    • G06F5/01—Methods or arrangements for data conversion without changing the order or content of the data handled for shifting, e.g. justifying, scaling, normalising

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)

Abstract

PURPOSE:To reduce a dead shift time, by stopping a shift when it has been decided that a data to be shifted is zero, and deriving a result of opertion, in an operation device of a data processing equipment. CONSTITUTION:When an operation start signal is sent out from a controlling circuit 7, a selecting circuit 5 selects an operation data which is provided from the controlling circuit 7 when the operation start signal is logical ''1'', and stores it in a register 1. An operation data of the register 1 is shifted and updated by 4 bits each, and on the other hand, this data is provided to a deciding circuit 8, and whether it is zero or not is decided on all such occasions. If it is decided that a data is zero, a signal to be outputted to a signal line 60 is made logical ''0'' and its shift is stopped immediately so that a result of operation can be derived. Accordingly, not only the number of times of a shift but also a shift time can be reduced.
JP9342880A 1980-07-09 1980-07-09 Operation device Pending JPS5719841A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9342880A JPS5719841A (en) 1980-07-09 1980-07-09 Operation device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9342880A JPS5719841A (en) 1980-07-09 1980-07-09 Operation device

Publications (1)

Publication Number Publication Date
JPS5719841A true JPS5719841A (en) 1982-02-02

Family

ID=14082028

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9342880A Pending JPS5719841A (en) 1980-07-09 1980-07-09 Operation device

Country Status (1)

Country Link
JP (1) JPS5719841A (en)

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