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|
 The Epson HX-20 | |
| Also known as | HC-20 |
|---|---|
| Manufacturer | Epson |
| Release date | July 1982[1][2][3] |
| Introductory price | US$795 (today $2430) |
| CPU | Two Hitachi 6301 CPUs at 614 kHz |
| Memory | 16 KB RAM expandable to 32 KB 32 KB ROM expandable to 64 KB |
| Display | 4 lines x 20 characters LCD |
| Graphics | 120 × 32-pixel |
| Input | Full-transit keyboard |
| Power | rechargeable nickel-cadmium batteries |
| Dimensions | A4 Sized |
| Mass | Approximately 1.6 kg |
The HX-20 (also known as the HC-20) is an early laptop released by Seiko Epson in July 1982. It was the first notebook-sized portable computer,[4][5] occupying roughly the footprint of an A4 notebook while being lightweight enough to hold comfortably with one hand at 1.6 kilograms (3.5 lb) and small enough to fit inside an average briefcase.[6]
Despite praise from journalists for its technical innovations, the computer was not a commercial success outside of Japan. Radio Shack's TRS-80 Model 100 (the American version of a Kyocera notebook), released in 1983, is thus credited as the first commerically successful notebook computer.[7]
- ^ "Shinshu Seiki/Suwa Seikosha HC-20". IPSJ Computer Museum. Retrieved 19 June 2019.
- ^ Michael R. Peres, The Focal Encyclopedia of Photography, page 306, Taylor & Francis
- ^ "Epson HX-20 laptop computer". Museum of Technology. Retrieved 9 September 2016.
- ^ Kent, Allen; James G. Williams, eds. (1990). Encyclopedia of Microcomputers. Vol. 6. Marcel Dekker. p. 298. ISBN 978-1-00-072330-4 – via Google Books.
- ^ Staff writers (November 22, 1999). "The Digital Century: The PC". PC World. IDG Publications. Archived from the original on April 24, 2021 – via CNN.com.
- ^ "Epson HX-20". Victoria and Albert Museum. n.d.
- ^ McCracken, Harry (August 6, 2012). "A 35th-anniversary salute to Radio Shack's TRS-80". CNN.com. Warner Bros. Discovery. Archived from the original on April 15, 2022.
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