Files
website/content/museum/kyocera-kyotronic-85.md
T
yann64andClaude Opus 5.5 b274874139 All machines linked to their forum thread (full comment import)
1,289 discussions, 9,527 archived comments; pages no longer carry the comments themselves.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01YDRjtmAiNpo5mK5N3d7QwZ
2026-10-13 17:26:43 +02:00

3.0 KiB

title, categories, types, origins, years, cpus, params
title categories types origins years cpus params
Kyocera Kyotronic 85
Computers
Portable
Japan
1983
Intel 80C85 CMOS low power version
name image company company_name specs tabs forum_thread photos oc_id source
Kyotronic 85 /media/museum/photos/kyocera_kyotronic85_system_s1.jpg /companies/kyocera Kyocera
label value
NAME Kyotronic 85
label value
MANUFACTURER Kyocera
label value
TYPE Portable
label value
ORIGIN Japan
label value
YEAR 1983
label value
BUILT IN LANGUAGE Microsoft BASIC
label value
KEYBOARD Typewriter type, 72 keys with 16 function keys and 4 arrow keys
label value
CPU Intel 80C85 CMOS low power version
label value
SPEED 2.4 MHz
label value
RAM 8 to 32 KB
label value
ROM 32 KB
label value
TEXT MODES 40 columns x 8 lines
label value
GRAPHIC MODES 240 x 64 dots
label value
COLORS Monochrome
label value
SOUND Beeper
label value
SIZE / WEIGHT 28 (W) x 21.6 (D) x 5 (D) cm
label value
I/O PORTS Parallel printer, Tape recorder, Bar Code reader, Serial RS232, Phone, System bus
label value
BUILT IN MEDIA User RAM battery backup
label value
POWER SUPPLY 6V DC adaptor or 4 x AA batteries
label value
PERIPHERALS Disk drive unit
label value
PRICE Unknown
photos
1049
title subtitle text image
LARGE VIEW /media/museum/photos/kyocera_kyotronic85_system_s2.jpg
1079
url date
https://web.archive.org/web/20221203155553/http://www.old-computers.com/museum/computer.asp?c=1079 2022-12-03

The Kyotronics 85 may be considered the world's first true laptop computer.

It was designed and sold in Japan by Kyocera (Kyoto Ceramics). But curiously, apart from the Japanese market, it was little sold in the world despite its very innovative design.

On the other hand, three major computer firms noticed this little gem and licenced it. Shortly afterwards, one would see the same computer sold under three different names and case designs in every corner of the world. These machines were the NEC PC-8201, the Tandy Model 100 and the Olivetti M10.

Each brand added its own enhancement - arrow keys for the NEC, tilt display for the Olivetti, but the hardware basis was identical: an 8085 CPU, 8 to 32 KB of RAM, a full-size typewriter keyboard and an 8-line x 40-character LCD display.

Later, Tandy asked Kyocera to introduce changes and released the Tandy 102 (larger memory) then the Tandy 200 (larger display).

We need more info about this computer ! If you designed, used, or have more info about this system, please send us pictures or anything you might find useful.