JPS57103432A - Selecting circuit - Google Patents

Selecting circuit

Info

Publication number
JPS57103432A
JPS57103432A JP18090180A JP18090180A JPS57103432A JP S57103432 A JPS57103432 A JP S57103432A JP 18090180 A JP18090180 A JP 18090180A JP 18090180 A JP18090180 A JP 18090180A JP S57103432 A JPS57103432 A JP S57103432A
Authority
JP
Japan
Prior art keywords
logical
switches
circuits
ffs
terminals
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
JP18090180A
Other languages
Japanese (ja)
Inventor
Keiichi Sumiya
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 JP18090180A priority Critical patent/JPS57103432A/en
Publication of JPS57103432A publication Critical patent/JPS57103432A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
    • H03K17/51—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used
    • H03K17/56—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices
    • H03K17/60—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices the devices being bipolar transistors
    • H03K17/62—Switching arrangements with several input- output-terminals, e.g. multiplexers, distributors

Landscapes

  • Electronic Switches (AREA)

Abstract

PURPOSE:To set and reset a selecting signal only by the operation of a momentary switch, by constituting a circuit with plural momentary switches and logical operation circuits, OR gates, and FFs corresponding to these momentary switches. CONSTITUTION:A circuit consists of momentary switches 1a-1n and logical operation circuits 23a-23n, OR circuits 21a-21n, and FFs 22a-22n corresponding to switches 1a-1n, and signals from all switches 1a-1n and outputs of FFs corresponding to logical operation circuits are inputted to circuits 23a-23n. FFs are inverted when outputs of OR circuits are logical 1, and OR signals of input signals from switches are outputted only when signals of output terminals 3a-3n of FFs are logical 1. For example, when terminals 3b and 3a are logical 1 and 0, respectively, depression of the switch 1a inverts the FF22a to set terminals 3a and 3b logical 1 and 0 respectively. When the terminal 3a is logical 1 and all other terminals are logical 0, depression of the switch 1a outputs the logical 1 from the circuit 21a and inverts the FF22a, and the terminal 3a becomes logical 0, and the state of other terminals is not changed.
JP18090180A 1980-12-18 1980-12-18 Selecting circuit Pending JPS57103432A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP18090180A JPS57103432A (en) 1980-12-18 1980-12-18 Selecting circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP18090180A JPS57103432A (en) 1980-12-18 1980-12-18 Selecting circuit

Publications (1)

Publication Number Publication Date
JPS57103432A true JPS57103432A (en) 1982-06-28

Family

ID=16091285

Family Applications (1)

Application Number Title Priority Date Filing Date
JP18090180A Pending JPS57103432A (en) 1980-12-18 1980-12-18 Selecting circuit

Country Status (1)

Country Link
JP (1) JPS57103432A (en)

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