JPS55112662A - Input and output unit - Google Patents
Input and output unitInfo
- Publication number
- JPS55112662A JPS55112662A JP1834779A JP1834779A JPS55112662A JP S55112662 A JPS55112662 A JP S55112662A JP 1834779 A JP1834779 A JP 1834779A JP 1834779 A JP1834779 A JP 1834779A JP S55112662 A JPS55112662 A JP S55112662A
- Authority
- JP
- Japan
- Prior art keywords
- media
- usage
- time
- stored
- input
- 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
Links
Abstract
PURPOSE: To increase the system performance, by storing the usage time information of each access medium to the respective memory areas, and by controlling the unit so that the rate of usage of the media can almost be equal based on the measured time.
CONSTITUTION: In controlling access media of the hierarchy construction input and output unit, in the input and output control unit 4', when the access media 7a...7c controlled are started for use, the microprocessor 14 starts the timing circuit 15 and the time TS is read out and it is stored to the corresponded usage time memory acreas 17a...17c. Further, at the end of use of the media 7a...7c, the processor 14 reads out the time TE and it is stored in the corresponded usage time memory area. Thus, the usage time information of the media 7a...7c is stored in the memory areas 17a...17c, and when the data shift on the data memory medium 5 is required, based on the measured time, control is made so that the usage rate of the media 7a...7c can almost be equal, to increase the system performance.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1834779A JPS55112662A (en) | 1979-02-21 | 1979-02-21 | Input and output unit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1834779A JPS55112662A (en) | 1979-02-21 | 1979-02-21 | Input and output unit |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS55112662A true JPS55112662A (en) | 1980-08-30 |
Family
ID=11969125
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1834779A Pending JPS55112662A (en) | 1979-02-21 | 1979-02-21 | Input and output unit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS55112662A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH02140845A (en) * | 1988-11-21 | 1990-05-30 | Nec Corp | Automatic reference system |
JPH04241647A (en) * | 1990-08-28 | 1992-08-28 | Internatl Business Mach Corp <Ibm> | Device and method of controlling storage capacity |
JPH0659957A (en) * | 1991-06-27 | 1994-03-04 | Digital Equip Corp <Dec> | Filing system for storing data and method for allocating memory space |
-
1979
- 1979-02-21 JP JP1834779A patent/JPS55112662A/en active Pending
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH02140845A (en) * | 1988-11-21 | 1990-05-30 | Nec Corp | Automatic reference system |
JPH04241647A (en) * | 1990-08-28 | 1992-08-28 | Internatl Business Mach Corp <Ibm> | Device and method of controlling storage capacity |
JPH0659957A (en) * | 1991-06-27 | 1994-03-04 | Digital Equip Corp <Dec> | Filing system for storing data and method for allocating memory space |
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