---
title: "Proprietary International Announces ZT21000"
type: "article"
slug: "proprietary-international-announces-zt21000"
url: "http://localhost/article/proprietary-international-announces-zt21000/"
markdown_url: "http://localhost/article/proprietary-international-announces-zt21000.md"
published_at: "2020-10-27T17:11:26+00:00"
modified_at: "2024-06-23T09:39:22+00:00"
featured_image:
  url: "http://localhost/wp-content/uploads/2022/04/20230809-041332.jpg"
excerpt: "Details of their new co-processor for ZX/TS computers, the ZT21000."
category:
  - name: "Syntax"
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    url: "http://localhost/category/periodicals/syntax/"
post_tag:
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  - name: "Proprietary International"
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  - name: "TS 1000"
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publication: "Syntax"
publication_r:
  id: 10246
  title: "Syntax"
  type: "periodical"
  url: "http://localhost/periodical/syntax/"
volume: "4"
issue: "1"
issues_articles:
  - id: 26711
    title: "Syntax/Syntax ZX80 v4 n1"
    type: "issue"
    url: "http://localhost/issue/syntax-syntax-zx80-v4-n1/"
pages: "1"
pubdate: "January 1983"
archive_link: false
volumeissue: "v4n1"
companies_articles:
  - id: 20336
    title: "Proprietary International"
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---

# Proprietary International Announces ZT21000

Details of their new co-processor for ZX/TS computers, the ZT21000.