JPS5454555A - Memory cassette - Google Patents

Memory cassette

Info

Publication number
JPS5454555A
JPS5454555A JP12110677A JP12110677A JPS5454555A JP S5454555 A JPS5454555 A JP S5454555A JP 12110677 A JP12110677 A JP 12110677A JP 12110677 A JP12110677 A JP 12110677A JP S5454555 A JPS5454555 A JP S5454555A
Authority
JP
Japan
Prior art keywords
photo
diode
cassette
ram401
collector
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
JP12110677A
Other languages
Japanese (ja)
Other versions
JPS616436B2 (en
Inventor
Koichi Hamano
Takao Morimoto
Junko Watanabe
Kaoru Ono
Norio Yagi
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.)
Toshiba TEC Corp
Original Assignee
Tokyo 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 Tokyo Electric Co Ltd filed Critical Tokyo Electric Co Ltd
Priority to JP12110677A priority Critical patent/JPS5454555A/en
Priority to DE2840981A priority patent/DE2840981C2/en
Priority to US05/945,124 priority patent/US4245331A/en
Publication of JPS5454555A publication Critical patent/JPS5454555A/en
Publication of JPS616436B2 publication Critical patent/JPS616436B2/ja
Granted legal-status Critical Current

Links

Abstract

PURPOSE: To enable the information write-in or readout to the memory area with high reliability, by constituting the unit not subjected to the effect of external noise through the provision of photo couplers.
CONSTITUTION: In the memory cassette 4 for casher, when RAM401 is activated, the combination circuit of photo diode 409 and photo transistor 410, that is, photo coupler is used. That is, when the cassette 4 is coupled with the interface 123 of ECR and Tr123-5 is conducted with the Q output of FF123-2, current is flown through the collector-emitter path, chip activating terminal, and diode 409, illuminating the diode 409. Succeedingly, Tr410 is conductive, and the activating signal is fed to RAM401 from the external power supply 407 via the collector-emitter path of Tr410
COPYRIGHT: (C)1979,JPO&Japio
JP12110677A 1977-10-08 1977-10-08 Memory cassette Granted JPS5454555A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP12110677A JPS5454555A (en) 1977-10-08 1977-10-08 Memory cassette
DE2840981A DE2840981C2 (en) 1977-10-08 1978-09-21 Memory insert for electronic cash registers and data processing units
US05/945,124 US4245331A (en) 1977-10-08 1978-09-25 Memory pack

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12110677A JPS5454555A (en) 1977-10-08 1977-10-08 Memory cassette

Publications (2)

Publication Number Publication Date
JPS5454555A true JPS5454555A (en) 1979-04-28
JPS616436B2 JPS616436B2 (en) 1986-02-26

Family

ID=14803018

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12110677A Granted JPS5454555A (en) 1977-10-08 1977-10-08 Memory cassette

Country Status (1)

Country Link
JP (1) JPS5454555A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01145849U (en) * 1988-03-31 1989-10-06

Also Published As

Publication number Publication date
JPS616436B2 (en) 1986-02-26

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