JPS5454555A - Memory cassette - Google Patents
Memory cassetteInfo
- 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
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
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)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH01145849U (en) * | 1988-03-31 | 1989-10-06 |
-
1977
- 1977-10-08 JP JP12110677A patent/JPS5454555A/en active Granted
Also Published As
Publication number | Publication date |
---|---|
JPS616436B2 (en) | 1986-02-26 |
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