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6,654 pages: 1,289 machines, 702 software, 460 companies, 64 history, 17 articles, 59 fun.
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Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01YDRjtmAiNpo5mK5N3d7QwZ
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co-authored by Claude Opus 5.5
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---
title: Leanord Silex
categories:
- Computers
types:
- Professional Computer
origins:
- France
years:
- '1979'
cpus:
- NMOS 6502
params:
name: Silex
image: /media/museum/photos/leanord_silex_1s.jpg
company: /companies/leanord
company_name: Leanord
specs:
- label: NAME
value: Silex
- label: MANUFACTURER
value: Leanord
- label: TYPE
value: Professional Computer
- label: ORIGIN
value: France
- label: YEAR
value: September ? 1979
- label: END OF PRODUCTION
value: Unknown
- label: BUILT IN LANGUAGE
value: Monitor (2 KB) + Basic (6 KB). Extended Basic in option (10 KB)
- label: KEYBOARD
value: Full stroke QWERTY keyboard with numeric and function keypads. AZERTY available in option.
- label: CPU
value: NMOS 6502
- label: SPEED
value: 1 MHz
- label: CO-PROCESSOR
value: Unknown
- label: RAM
value: 32 KB, 48 KB or 64 KB depending on versions
- label: ROM
value: 8 KB (2 KB monitor + 6 KB Basic)
- label: TEXT MODES
value: 40 x 24, 80 x 24 in option
- label: GRAPHIC MODES
value: 280 x 192
- label: COLORS
value: 12'' monochrome built-in display
- label: SOUND
value: Unknown
- label: SIZE / WEIGHT
value: 35 (h) x 54 (l) x 59 (d) cm / 20 Kg
- label: I/O PORTS
value: Unknown
- label: BUILT IN MEDIA
value: |-
built-in 5.25'' disk-drive (143 KB)\
5.25'' 650KB high density and 8'' disk drives (1 MB and 2 MB)available in option as well as 10 MB hard disk
- label: OS
value: Unknown
- label: POWER SUPPLY
value: Built-in power supply
- label: PERIPHERALS
value: External disk drives (single & double), printers, A/D convertors, hard disk, 16 KB memory expansion, modem, real time clock, IEEE S 840 bus
- label: PRICE
value: 29 400 F (France, 1979)
tabs:
- photos
- adverts
- docs
photos:
- title: SILEX
subtitle: ''
text: ''
image: /media/museum/photos/leanord_silex_1.jpg
adverts:
- title: FRENCH ADVERT (NOV. 1979)
subtitle: ''
text: |-
This is the only SILEX advert known so far...
It says : "Silex, a stone in our competitors garden."
Silex means flint in french, a stone mainly used in prehistoric times as tools and weapons.
image: /media/museum/pubs/leanord_silex_pub_1.jpg
- title: FRENCH ARTICLE
subtitle: ''
text: |-
...released in "l'Ordinateur Individuel" magazine n°12
Thanks to Fabien Neck and its [website](http://www.system-cfg.com/) for this scan
image: /media/museum/pubs/leanord_silex_oi12.jpg
- title: SILEX DOCUMENTATION
subtitle: ''
text: ''
image: /media/museum/pubs/leanord_silex_doc1.jpg
docs:
- title: LEANORD SILEX COMMERCIAL BROCHURE
url: http://ksinfos.perso.sfr.fr/Articles/Leanord/silex.htm
cover: /media/museum/docs/couvs/leanor_silex_doc_couv.jpg
text: |-
[**LEANORD SILEX COMMERCIAL BROCHURE**](http://ksinfos.perso.sfr.fr/Articles/Leanord/silex.htm)written by Leanord
 compiled/archived by Carl Hervier\
 type of document : Online reader\
 source : [Retro Computing](http://ksinfos.perso.sfr.fr/)
**... READ THE ONLINE VERSION BY CLICKING BELOW :**
comments:
- author: Dan (France)
date: Saturday 9th April 2011
text: |-
Hi,\
I ''ve worked in the plant (town :Haubourdin), and the Sil''z was an Apple 2 machine with some enhancements (graphics) in a hard case (aluminium), and with a better power supply, built in video CRT and strong keyboard\
It was possible to connect 8" drives (I''ve writted routines for that, in 6502 assembly and Pascal UCSD\
On the picture, on the right,it''s a 5.25" disk-drive
- author: Yan (Brazil)
date: Monday 2nd December 2019
text: Looking at the random systems I first fell into the "Darlay DY 80" page and now in this "Leanord Silex", both Made in France. Seems to me that the French are as good making computers as they are making cars. LoL. :D
oc_id: 1027
source:
url: https://web.archive.org/web/20230608074904/http://www.old-computers.com/museum/computer.asp?c=1027
date: '2023-06-08'
---
Little is known about this computer. Help welcomed ! Silex means flint in french, a stone mainly used in prehistoric times as tools and weapons.
The SILEX is a professional computer released in 1979 by the french company Leanord. It was conceived from a modified Apple II board.
It has a professional keyboard with function keypad and numeric keypad. The display is built-in the system. It is monochrome but has graphic capabilities (280 x 192) and can display 40 x 24 characters (80 x 24 in option). To the right of the display is a 5.25'' disk-drive built-in the case (143 KB). Additional storage media will be available later (high density disk drives and hard disks).
Different languages were available : extended BASIC (in english and in french!), PASCAL, "evoluated disk operating system"...
The fact that there is so little information about the Silex, makes us believe that it had a very short life, at least under this name, since [SIL'Z systems](/museum/leanord-sil-z-model-5-6/) from the same company seem to be an evolution of the Silex. SIL'Z systems had some success, particularly in french administrations and schools.
<table> <tr> <td></td> <td>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.</td> <td></td> </tr> </table>