The Microwriter is a hand-held portable word-processor with a chording keyboard. It was sold in the early 1980s by Microwriter Ltd, of London, UK. Microwriter was invented by UK-based, US-born film director Cy Endfield and his partner Chris Rainey.
The 23 cm x 12 cm x 5 cm device comprises:
- A six-button chording keyboard.
- A single line LCD display.
- An 8 bit CDP1802 microprocessor.
- Complete Word processing software in ROM.
- 16 kilobytes of RAM.
- Rechargeable Nickel-cadmium batteries - sufficient to run the device for 30 hours
The keyboard uses one button for each finger and two for the thumb of the user's right hand. The five buttons immediately beneath the fingers are pressed in different combinations to generate all letters. The second thumb button is used to toggle through a range of modes that allow the user to switch case, enter numbers, insert punctuation and even add ASCII control characters, to be used in editing the document being prepared. To type a letter "T", for example, the user would tap the top thumb button to shift to uppercase, then chord a "t" by pressing the index finger and ring finger buttons simultaneously.
The manufacturers claimed that most people could learn to use it in just a couple of hours. With some practice, it is possible to become a faster typist with the Microwriter than with a conventional keyboard, providing that what is being entered is just text. Typing is slowed if a substantial number of special characters have to be entered using the "shifting" mechanism.
Learning the chords for the basic letters and numbers is facilitated by a set of flash-cards that show simple mnemonics for each character.
Despite a lack of similar products, the Microwriter was not a success, and ceased production in 1985. It is likely that the concept of a chording keyboard put off many potential customers.
Kindly donated by Basil Bloom
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This exhibit has a reference ID of CH20989. Please quote this reference ID in any communication with the Centre for Computing History.
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