---
title: AI Electronics ABC 24
categories:
- Computers
types:
- Professional Computer
origins:
- Japan
years:
- '1979'
cpus:
- Zilog Z80A
params:
  name: ABC 24
  image: /media/museum/photos/ai_electronics_abc24_1.jpg
  company: /companies/ai-electronics
  company_name: AI Electronics
  specs:
  - label: NAME
    value: ABC 24
  - label: MANUFACTURER
    value: AI Electronics
  - label: TYPE
    value: Professional Computer
  - label: ORIGIN
    value: Japan
  - label: YEAR
    value: ? 1979
  - label: KEYBOARD
    value: |-
      Mechanical QWERTY / AZERTY keyboard\
      16 function keys and numeric keypad
  - label: CPU
    value: Zilog Z80A
  - label: SPEED
    value: 4 Mhz
  - label: CO-PROCESSOR
    value: Arithmetic processor
  - label: RAM
    value: 64 kb (up to 1Mb)
  - label: ROM
    value: 4 kb (monitor)
  - label: TEXT MODES
    value: 80 x 24
  - label: GRAPHIC MODES
    value: 640 x 288 optional (PLOT 10 compatible)
  - label: COLORS
    value: monochrome (12'' green monitor)
  - label: I/O PORTS
    value: 2 x serial ports - 2 x parallel ports x 1 GP-IB (IEEE 488) port
  - label: BUILT IN MEDIA
    value: 2 x 5''1/4 disk-drives (320k each)
  - label: OS
    value: Dosket, CP/M & M/PM
  - label: POWER SUPPLY
    value: PSU built-in
  - label: PERIPHERALS
    value: external disk-drives, 10Mb and 20Mb Winchester hard-disk
  tabs:
  - adverts
  - links
  adverts:
  - title: FRENCH ADVERTISEMENT
    subtitle: ''
    text: ''
    image: /media/museum/pubs/ai_electronics_abc24_pub.jpg
  links:
  - title: Gaby's Homepage für CP/M und Computergeschichte
    url: http://www.gaby.de/abc.htm
    text: This site features infos and an interesting article about the ABC-24
  comments:
  - author: java16
    date: Friday 13rd September 2013
    text: Hello, I have one, but I have not a keyboard ... dou you have some information if is possible to use another one from different of computer
  - author: Juergen Sievers (Germany)
    date: Thursday 1st March 2007
    text: |-
      Hi,

      I’m collector of vintage computer systems. One of my systems is an ABC-24 for which I have destroyed the CP/M Boot Disk. So I want to ask you for a copy of this Disk (or an Image) if you have one.

      Regards\
      Juergen
  oc_id: 34
  source:
    url: https://web.archive.org/web/20230603204804/http://www.old-computers.com/museum/computer.asp?c=34
    date: '2023-06-03'
---

The ABC-24 and [ABC-26](/museum/ai-electronics-abc-26/) could run up to 8 programs simultaneously and could manage 7 work-stations under M/PM (according to the advertisement). they has a real-time clock and 96 graphic symbols built-in.

There were several models : [20](/museum/ai-electronics-abc-20/), 21, 22, 23, 24, 25 and [26](/museum/ai-electronics-abc-26/), mostly differentiated by their storage capacities...\
The 2x Models were the successors of the ABC 10, which had a digital tape auxillary memory, supplied with DOSKET-T.

AI DOSKET is the AI Electronics Operating System. A lot of languages were developed for these computers: MBasic, CBasic, Basic, Pascal, Cobol80, PL/3, Fortran IV and assembler.

*Picture courtesy of [www.gaby.de](http://www.gaby.de).*