JPS54151369A - Programmable counter - Google Patents

Programmable counter

Info

Publication number
JPS54151369A
JPS54151369A JP6024078A JP6024078A JPS54151369A JP S54151369 A JPS54151369 A JP S54151369A JP 6024078 A JP6024078 A JP 6024078A JP 6024078 A JP6024078 A JP 6024078A JP S54151369 A JPS54151369 A JP S54151369A
Authority
JP
Japan
Prior art keywords
counter
decoder
constitution
prescaler
terminal
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.)
Granted
Application number
JP6024078A
Other languages
Japanese (ja)
Other versions
JPS6013576B2 (en
Inventor
Yoshio Nomachi
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 JP6024078A priority Critical patent/JPS6013576B2/en
Publication of JPS54151369A publication Critical patent/JPS54151369A/en
Publication of JPS6013576B2 publication Critical patent/JPS6013576B2/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K23/00—Pulse counters comprising counting chains; Frequency dividers comprising counting chains
    • H03K23/64—Pulse counters comprising counting chains; Frequency dividers comprising counting chains with a base or radix other than a power of two
    • H03K23/66—Pulse counters comprising counting chains; Frequency dividers comprising counting chains with a base or radix other than a power of two with a variable counting base, e.g. by presetting or by adding or suppressing pulses
    • H03K23/667—Pulse counters comprising counting chains; Frequency dividers comprising counting chains with a base or radix other than a power of two with a variable counting base, e.g. by presetting or by adding or suppressing pulses by switching the base during a counting cycle

Abstract

PURPOSE:To speed up the processing time by omitting the adders and subtractors, through the constitution of the programmable counter controlling frequency dividing ratio depending on the digital signal externally with high speed variable prescaler and counter and decoder. CONSTITUTION:The high speed prescaler 3, first counter 4, second counter 5, first decoder 6, and second decoder 7 are connected between the signal input terminal 1 and the signal output terminal 2. With this constitution for the programmer, the prescaler 3 selects the frequency dividing ratio from U to L, and U(Ps+S) sets of pulses are inputted to the terminal 1. Next, when L{PM-(Ps+S)+M} sets of pulses are inputted to the terminal 1, N=(S+10M)+(Ps+10PM), frequency dividing ratio, is obtained with U=11 and L=10. That is, by setting numeral S+10M with decoders 6 and 7, desired frequency ratio N can be obtained by adding and subtracting the numeral Ps+10PM to this.
JP6024078A 1978-05-19 1978-05-19 programmable counter Expired JPS6013576B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6024078A JPS6013576B2 (en) 1978-05-19 1978-05-19 programmable counter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6024078A JPS6013576B2 (en) 1978-05-19 1978-05-19 programmable counter

Publications (2)

Publication Number Publication Date
JPS54151369A true JPS54151369A (en) 1979-11-28
JPS6013576B2 JPS6013576B2 (en) 1985-04-08

Family

ID=13136449

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6024078A Expired JPS6013576B2 (en) 1978-05-19 1978-05-19 programmable counter

Country Status (1)

Country Link
JP (1) JPS6013576B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57129030A (en) * 1981-02-04 1982-08-10 Hitachi Ltd Variable frequency divider
JPS6316724U (en) * 1986-07-18 1988-02-03

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57129030A (en) * 1981-02-04 1982-08-10 Hitachi Ltd Variable frequency divider
JPS6316724U (en) * 1986-07-18 1988-02-03

Also Published As

Publication number Publication date
JPS6013576B2 (en) 1985-04-08

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