JPS57113090A - Control circuit for serial printer - Google Patents

Control circuit for serial printer

Info

Publication number
JPS57113090A
JPS57113090A JP18820180A JP18820180A JPS57113090A JP S57113090 A JPS57113090 A JP S57113090A JP 18820180 A JP18820180 A JP 18820180A JP 18820180 A JP18820180 A JP 18820180A JP S57113090 A JPS57113090 A JP S57113090A
Authority
JP
Japan
Prior art keywords
circuit
task
microprogram
tasks
control 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
JP18820180A
Other languages
Japanese (ja)
Inventor
Showa Kurokawa
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 JP18820180A priority Critical patent/JPS57113090A/en
Publication of JPS57113090A publication Critical patent/JPS57113090A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To enable higher speed, meticulous control and effective separation from optional functions by combining specified actions of three kinds of microprograms.
CONSTITUTION: When receiving instructions, first and second microprogram controlling circuits 22 and 23 separately starts tasks imposed under respective microprogram control. On the other hand, a third microprogram controlling circuit 21 as master circuit also devotes itself to own task while always checking a slave circuit for the conditions of the task. It has information on the end of tasks which are sent via a bus line interface 24. When receiving inormation on the end of the task, the circuit 21 excites a coil of a hammer 5 to press a finger 9 of a print wheel 4 against a platen 6 thereby performing a printing. Then, likewise, the subsequent data is provided from an external controller to repeat similar operations.
COPYRIGHT: (C)1982,JPO&Japio
JP18820180A 1980-12-29 1980-12-29 Control circuit for serial printer Pending JPS57113090A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP18820180A JPS57113090A (en) 1980-12-29 1980-12-29 Control circuit for serial printer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP18820180A JPS57113090A (en) 1980-12-29 1980-12-29 Control circuit for serial printer

Publications (1)

Publication Number Publication Date
JPS57113090A true JPS57113090A (en) 1982-07-14

Family

ID=16219537

Family Applications (1)

Application Number Title Priority Date Filing Date
JP18820180A Pending JPS57113090A (en) 1980-12-29 1980-12-29 Control circuit for serial printer

Country Status (1)

Country Link
JP (1) JPS57113090A (en)

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