The OKITACsystem9 K Series, announced by Oki Electric Industry in 1980, was the leader in achieving total conversion to kanji (Chinese characters). In the office computers of the time, only the screen display had been converted to kanji, and kana was dominant in data entry and document printing. With the OKITACsystem9 K, it became possible to perform tasks such as kanji input using a special-purpose book, and document printing with a kanji printer. Messages from the operating system were also displayed in kanji, thereby eliminating confusion for Japanese readers.
| Model K30 | Model K50 | Model K60 | Model K70 | ||
|---|---|---|---|---|---|
| Announcement date | May 8, 1979 | October 1, 1979 | |||
| Basic processing unit | Memory element | MOS IC | |||
| Memory capacity | 128KB-256KB | ||||
| Cycle time | 0.7µs | ||||
| Kanji | JIS level 1 and level 2, 6,349char | ||||
| Console typewriter | Print speed | 90char/s, 60char/s (Kanji) | |||
| Keyboard | AIEUO layout, JIS layout | ||||
| Display | 40char x 2line | ||||
| External memory unit | Disk | - | Hard disk unit 10MB | Disk pack unit 20MB | Disk pack unit 40MB |
| Floppy disk drive | Floppy disk drive 512kB | 1MB x2 | |||
| Peripheral equipment | Line printer | Ο | |||
| Magnetic tape unit | Ο | ||||
| Character display | Ο14inch CRT display | ||||
| Paper tape reader | Ο | ||||
| Paper tape punch | Ο | ||||
| Card reader | Ο | ||||
| Mark sheet feeder | Ο | ||||
| Communications controller | Ο-5line (200bps~9600bps) | ||||
