website/content/museum/ai-electronics-abc-20.md at bfb34266c8a47f9f8f5675ab4df6783842b0c3b9

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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

2.5 KiB

Raw Blame History

title, categories, types, origins, years, cpus, params

title

categories

types

origins

years

cpus

params

AI Electronics ABC 20

Computers

Professional Computer

Japan

1979

Z80

name

image

company

company_name

specs

tabs

forum_thread

adverts

oc_id

source

ABC 20

/media/museum/photos/ai_electronics_abc20.jpg

/companies/ai-electronics

AI Electronics

label	value
NAME	ABC 20

label	value
MANUFACTURER	AI Electronics

label	value
TYPE	Professional Computer

label	value
ORIGIN	Japan

label	value
YEAR	1979

label	value
KEYBOARD	QWERTY, mechanical keyboard\ Function keys, arrow keys and numeric keypad

label	value
CPU	Z80

label	value
SPEED	Unknown

label	value
RAM	64 KB

label	value
VRAM	Unknown

label	value
ROM	4 KB monitor loader

label	value
TEXT MODES	80 x 32

label	value
GRAPHIC MODES	Unknown

label	value
COLORS	Monochrome built-in display

label	value
SOUND	Unknown

label	value
SIZE / WEIGHT	Surely heavy !

label	value
I/O PORTS	SIO : (RS232, current, TTL) : 2 chanels\ PIO : (TTL) : 8bits x 2 ports\ IEEE

label	value
BUILT IN MEDIA	2 floppy Disk units (322 KB)

label	value
OS	Dosket & CP/M

label	value
POWER SUPPLY	PSU built-in

label	value
PERIPHERALS	Winchester type disk memory\ Digital cassette tape (3 units)\ Floppy disk (2 units)\ Light Pen\ Color Display\ Printer\ Graphic printer\ XY Plotter

label	value
PRICE	Unknown

adverts

446

title	subtitle	text	image
FRENCH AD (JAN. 1980)			/media/museum/pubs/ai-electronics_abc20_pub_1.jpg

451

url	date
https://web.archive.org/web/20230210082456/http://www.old-computers.com/museum/computer.asp?c=451	2023-02-10

There were several models : 20, 21, 22, 23, 24, 25 and 26. The Model 2x was the successor of the ABC 10, which had a digital tape auxillary memory, supplied with DOSKET-T.

A lot of languages were developed for these computers:
- Dosket : Fortran IV, Basic, Cobol, Macro Assembler.
- CP/M : MBasic, CBasic, Pascal, Cobol 80, Fortran 80, PL/3, etc.

(AI DOSKET is the AI Electronics Operating System.)

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.

2.5 KiB Raw Blame History

2.5 KiB

Raw Blame History