Faculty of computer engineering information security direction

Japanese word processor devices[edit]

In Japan, even though typewriters with Japanese writing system had widely been used for businesses and governments, they were limited to specialists who required special skills due to the wide variety of letters, until computer-based devices came onto the market. In 1977, Sharp showcased a prototype of a computer-based word processing dedicated device with Japanese writing system in Business Show in Tokyo.^[15][16]

World-first Japanese word processor Toshiba JW-10 (Launched in February 1979,　Toshiba Science Institute)
Toshiba released the first Japanese word processor JW-10 in February 1979.^[17] The price was 6,300,000 JPY, equivalent to US$45,000. This is selected as one of the milestones of IEEE.^[18]

Toshiba Rupo JW-P22(K)（March 1986） and an optional micro floppy disk drive unit JW-F201

Sharp Shoin WD-J150
The Japanese writing system uses a large number of kanji (logographic Chinese characters) which require 2 bytes to store, so having one key per each symbol is infeasible. Japanese word processing became possible with the development of the Japanese input method (a sequence of keypresses, with visual feedback, which selects a character) -- now widely used in personal computers. Oki launched OKI WORD EDITOR-200 in March 1979 with this kana-based keyboard input system. In 1980 several electronics and office equipment brands entered this rapidly growing market with more compact and affordable devices. While the average unit price in 1980 was 2,000,000 JPY (US$14,300), it was dropped to 164,000 JPY (US$1,200) in 1985.^[19] Even after personal computers became widely available, Japanese word processors remained popular as they tended to be more portable (an "office computer" was initially too large to carry around), and become necessities in business and academics, even for private individuals in the second half of the 1980s.^[20] The phrase "word processor" has been abbreviated as "Wa-pro" or "wapuro" in Japanese.