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Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
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---
title: Czerweny CZ-1000
categories:
- Computers
types:
- Home Computer
origins:
- Argentina
years:
- '1985'
cpus:
- Zilog Z80A
params:
name: CZ-1000
image: /media/museum/photos/czerweny_cz1000_1s.jpg
company: /companies/czerweny
company_name: Czerweny
specs:
- label: NAME
value: CZ-1000
- label: MANUFACTURER
value: Czerweny
- label: TYPE
value: Home Computer
- label: ORIGIN
value: Argentina
- label: YEAR
value: '1985'
- label: BUILT IN LANGUAGE
value: Sinclair Basic
- label: KEYBOARD
value: Touch-sensitive keyboard, 40 keys
- label: CPU
value: Zilog Z80A
- label: SPEED
value: 3.5 MHz
- label: RAM
value: 2 KB
- label: ROM
value: 8 KB
- label: TEXT MODES
value: 32 x 24 (but 2 lines are reserved for system messages and commands)
- label: GRAPHIC MODES
value: 64 x 44
- label: COLORS
value: Black and white
- label: SOUND
value: None
- label: SIZE / WEIGHT
value: 167 x 175 x 40 mm / 350gr
- label: I/O PORTS
value: Z80 Bus, tape, video
- label: POWER SUPPLY
value: External 9V - 600 mA AC adaptor
- label: PRICE
value: $80 ($79.90 'Austral' in Argentina)
tabs:
- photos
- hardware
- emulators
- links
- docs
forum_thread: 902
photos:
- title: CZ-1000
subtitle: ''
text: Thanks to Nestor Zangoni for this picture
image: /media/museum/photos/czerweny_cz1000_1.jpg
- title: MANUAL COVER
subtitle: ''
text: Thanks to **Mario Villar**
image: /media/museum/photos/czerweny_cz1000_manualcover_1.jpg
- title: BOX
subtitle: ''
text: Thanks to Nestor Zangoni for this picture
image: /media/museum/photos/czerweny_cz1000_box.jpg
hardware:
- title: 64 KB
subtitle: from Suntroncis
text: Suntronics T/S 1000 & ZX81 64K Memory Pack (Male Socket on Back, Female Socket on Front).
image: /media/museum/hardware/timex_1000-suntronics-64k_1.jpg
- title: TIMEX SINCLAIR 1016
subtitle: 16k RAM extension
text: ''
image: /media/museum/hardware/timex_sinclair-1000_16kram-1016.jpg
emulators:
- title: EightyOne
url: http://www.chuntey.com/eightyone/
platform: Windows
text: Excellent emulator emulating nearly all ZX computers (80, 81, Spectrums, Timex, etc.). As well as emulating the machines themselves, numerous addon cards are supported, including hi-res graphics, custom character sets, sound and colour cards.
- title: VB81
url: http://freestuff.grok.co.uk/vb81/
platform: Windows
text: Sinclair ZX81 Emulator (with Visual Basic sources). Excellent emulator
- title: X-Tender
url: http://www.delhez.demon.nl/
platform: Windows
text: The best ZX emulator for PC compatibles
- title: ZX 81 Homepage
url: http://www.maxon.de/homes/r_kurz/
platform: Windows
text: ''
- title: ZX81
url: http://www.w-4.de/~kurz/
platform: Apple
text: ''
- title: XZ81
url: http://www.zx81.nl/
platform: Unix / Linux
text: And other ZX-81 emulators there...
- title: ZX-81 Emulator 2.1
url: http://www.hh.schule.de/hhs/mjaap/ftp/zx81_v21.zip
platform: Atari
text: ''
- title: Java ZX81 Emulator
url: http://home.clara.net/rsergeant/
platform: Other platform
text: Java emulator
- title: Timex/Sinclair 1000 Emulator (Java)
url: http://www.vavasour.ca/jeff/trs80.html#ts1000
platform: Other platform
text: With this JAVA emulator, you'll be able to run a Timex/Sinclair 1000 in your browser window
- title: zx81emu
url: http://www.tlienhard.com/ap800.shtml
platform: Other platform
text: ZX-81 Emulator for the SonyEricsson P800 Smart Phone
- title: MESS
url: http://www.mess.org
platform: Multiplatform
text: MESS emulates the ZX-81, Lambda 8300, Power 3000 and other clones !
links:
- title: Achromic's ZX81 Site
url: http://zx81.achromic.co.uk/
text: A small, ZX81 fan site. With games and links to some emulators
- title: DOCUMENTATION
url: http://www.8bit.ht.st/
text: The Lil Old Sinclair Computer Technical Information Repository
- title: DOCUMENTATION
url: http://web.ukonline.co.uk/sinclair.zx81/
text: ZX-81 on-line manual. Great work !
- title: Jame's Sinclair ZX-81 Page
url: http://james.istop.com/zx81/
text: Some technical infos and links
- title: Planet Sinclair
url: http://www.nvg.ntnu.no/sinclair/computers/zx81/zx81.htm
text: Planet Sinclair has very interesting information on the ZX-81
- title: Sinclair ZX Hardware Website
url: http://www.xs4all.nl/~echorod/zx/index.htm
text: Features designs to build your own Sinclair computer
- title: The ZX81 Hardware and Software Collection
url: http://zx81.atspace.com/
text: Online museum for ZX81 hardware, software and literature
- title: TS1000.US
url: http://www.ts1000.us/
text: Documentation, software, hardware tips and more
- title: Zebra Systems, Inc.
url: http://www.zebrasystems.com/zebrasystems/zx81/index.html
text: Website where you can buy Timex/Sinclair products including ZX-81 kits !
- title: ZX81 Collection
url: http://www.zx81stuff.org.uk/
text: Online collection of ZX81 tapes, books and hardware
- title: ZX-81 forum
url: http://zx81.tlienhard.com/
text: A new ZX-81 forum. cool.
- title: ZX81 Home Page
url: http://www.honneamise.u-net.com/zx81/
text: FAQ and ZX81 Charts.
- title: ZX-81 The Archive
url: http://www.imarshall.karoo.net/zx81/zx81technical.htm
text: Lot of info here
- title: ZX-81 webring
url: http://www.zx81.de/webring/index.htm
text: Very useful to explore other ZX-81 related sites
- title: ZX-Team Homepage
url: http://www.zx81.de/
text: Quite a reference for the ZX-80, ZX-81, TS1000-1500, PC8300, Lambda and Jupiter Ace !
- title: ZX-TEAM-homepage & ZX-81 Web-Ring
url: http://www.zx81.de/
text: Logically useful
- title: Web Wiz CAPTCHA
url: http://www.webwizcaptcha.com
text: Sinclair computers
docs:
- title: SINCLAIR ZX-81 BASIC PROGRAMMING
url: ftp://ftp.worldofspectrum.org/pub/sinclair/books/ZX81BASICProgramming.pdf
cover: /media/museum/docs/couvs/sinclair_zx81_basic-programming.jpg
text: |-
[**SINCLAIR ZX-81 BASIC PROGRAMMING**](ftp://ftp.worldofspectrum.org/pub/sinclair/books/ZX81BASICProgramming.pdf)written by Sinclair Research Limited / Steven Vickers
 compiled/archived by Robin Stuart\
 type of document : PDF\
 size : 5,2 MB\
 source : [www.worldofspectrum.org](http://www.worldofspectrum.org/)
**... READ THE ONLINE VERSION BY CLICKING BELOW :**
- title: TIMEX SINCLAIR 1000 - USER MANUAL
url: http://www.ts1000.us/usermanuals.htm
cover: /media/museum/docs/couvs/timex-sinclair_1000_user-manual.jpg
text: |-
[**TIMEX SINCLAIR 1000 - USER MANUAL**](http://www.ts1000.us/usermanuals.htm)written by Timex / Sinclair / Steven Vickers
 compiled/archived by Bill Hicks\
 type of document : PDF\
 size : 3.5 MB\
 source : [www.ts1000.us](http://www.ts1000.us/)
**... READ THE ONLINE VERSION BY CLICKING BELOW :**
- title: THE COMPLETE TIMEX TS1000 & SINCLAIR ZX81 ROM DISASSEMBLY
url: null
cover: /media/museum/docs/couvs/sinclair_zx81_rom-disasembly.jpg
text: |-
**THE COMPLETE TIMEX TS1000 & SINCLAIR ZX81 ROM DISASSEMBLY**\
written by Dr. Ian Logan & Dr. Frank O'Hara
 compiled/archived by Bill Hicks\
 type of document : PDF\
 size : 5 MB\
 source : [www.ts1000.us](http://www.ts1000.us/)
**... READ THE ONLINE VERSION BY CLICKING BELOW :**
- title: TIMEX SINCLAIR 2020 COMPUTER PROGRAM RECORDER
url: null
cover: /media/museum/docs/couvs/ts2020_tape-recorder_manual.jpg
text: |-
**TIMEX SINCLAIR 2020 COMPUTER PROGRAM RECORDER**\
written by Timex Computer Corporation
 compiled/archived by Bill Hicks / www.ts1000.us\
 type of document : Online reader
**... READ THE ONLINE VERSION BY CLICKING BELOW :**
related:
- /museum/czerweny-cz-1000-plus
- /museum/lambda-electronics-ltd-pc-8300
- /museum/microace
- /museum/sinclair-zx-80
- /museum/sinclair-zx-81
- /museum/timex-sinclair-1000
- /museum/tonel-pc
oc_id: 925
source:
url: https://web.archive.org/web/20230604045301/http://www.old-computers.com/museum/computer.asp?c=925
date: '2023-06-04'
---
TADEO CZERWENY "CZ" is a an electromechanical company, which was founded by Tadeo Czerweny in September 1958. It is located in Parana, Entre Rios province, in Argentina. The company made transformers, electric motors, etc. In the 80´s Czerweny marketed the Timex Sinclair´s models, under its own name.
The CZ-1000 is thus a rebadged [Timex Sinclair 1000](/museum/timex-sinclair-1000/), which is itself a [Sinclair ZX-81](/museum/sinclair-zx-81/) with 2 KB RAM.
In Argentina Czerweny models competed with Brazilians TK 83, 85, 90x and genuine Sinclair machines, but CZ sold more machines than them.
---
**Marcelo Garcia** comments:\
In the 80's in Argentina it was possible to find a memory expansion module (16 KB), which was simply a box with extra memory chips which plugged into the back of the Czerweny CZ 1000
<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>