---
title: "Sinclair ZX81 ‘Devoted’ to Owners"
type: "article"
slug: "sinclair-zx81-devoted-to-owners"
url: "http://localhost/article/sinclair-zx81-devoted-to-owners/"
markdown_url: "http://localhost/article/sinclair-zx81-devoted-to-owners.md"
published_at: "2020-10-27T17:08:29+00:00"
modified_at: "2024-06-23T00:48:02+00:00"
featured_image:
  url: "http://localhost/wp-content/uploads/2022/04/20230809-041332.jpg"
excerpt: "Clive Sinclair, inventor of the first pocket calculator and first pocket TV, showed off his almost pocket computer, the ZX80, at CES. Sinclair has beefed up the ZX80, introducing a $39.95 8K BASIC chip and $99.95 16K RAM add-on module. The 8K BASIC has log, trig and other functions; graphics; and floating point arithmetic to…"
category:
  - name: "Infoworld"
    slug: "infoworld"
    taxonomy: "category"
    url: "http://localhost/category/periodicals/infoworld/"
post_tag:
  - name: "1981"
    slug: "year-1981"
    taxonomy: "post_tag"
    url: "http://localhost/tag/year-1981/"
  - name: "TS 1000"
    slug: "ts1000"
    taxonomy: "post_tag"
    url: "http://localhost/tag/ts1000/"
  - name: "ZX80"
    slug: "zx80"
    taxonomy: "post_tag"
    url: "http://localhost/tag/zx80/"
  - name: "ZX81"
    slug: "zx81"
    taxonomy: "post_tag"
    url: "http://localhost/tag/zx81/"
model:
  - name: "Sinclair ZX80"
    slug: "zx80"
    taxonomy: "model"
    url: "http://localhost/model/zx80/"
  - name: "Sinclair ZX81"
    slug: "zx81"
    taxonomy: "model"
    url: "http://localhost/model/zx81/"
  - name: "Timex/Sinclair 1000"
    slug: "ts-1000"
    taxonomy: "model"
    url: "http://localhost/model/ts-1000/"
indiv:
  - name: "Wes Thomas"
    slug: "wes-thomas"
    taxonomy: "indiv"
    url: "http://localhost/indiv/wes-thomas/"
publication: "Infoworld"
publication_r:
  id: 10194
  title: "Infoworld"
  type: "periodical"
  url: "http://localhost/periodical/infoworld/"
authors: "Wes Thomas"
volume: "3"
issue: "14"
pages: "32"
pubdate: "July 20, 1981"
archive_link: false
archiveurl: "https://books.google.com/books?id=tT0EAAAAMBAJ&source=gbs_all_issues_r&cad=1"
volumeissue: "v3n14"
---

# Sinclair ZX81 ‘Devoted’ to Owners

Clive Sinclair, inventor of the first pocket calculator and first pocket TV, showed off his almost pocket computer, the ZX80, at CES. Sinclair has beefed up the ZX80, introducing a $39.95 8K BASIC chip and $99.95 16K RAM add-on module. The 8K BASIC has log, trig and other functions; graphics; and floating point arithmetic to nine-digit accuracy. A template slips on top of the keyboard to match it to the new commands.