---
title: "Keyboard/System Conversion: The First 40/1 Keys"
type: "article"
slug: "keyboard-system-conversion-the-first-40-1-keys"
url: "http://localhost/article/keyboard-system-conversion-the-first-40-1-keys/"
markdown_url: "http://localhost/article/keyboard-system-conversion-the-first-40-1-keys.md"
published_at: "2020-10-27T17:18:50+00:00"
modified_at: "2024-06-23T01:05:04+00:00"
featured_image:
  url: "http://localhost/wp-content/uploads/2022/04/20230809-041332.jpg"
excerpt: "The fundamental conversion described here can be made with almost any KB switch array. 40 keys, new or used, so long as the switches are normally open and are closed with a key stroke."
category:
  - name: "SYNC"
    slug: "sync"
    taxonomy: "category"
    url: "http://localhost/category/periodicals/sync/"
post_tag:
  - name: "1982"
    slug: "year-1982"
    taxonomy: "post_tag"
    url: "http://localhost/tag/year-1982/"
  - name: "Hardware project"
    slug: "hardware-project"
    taxonomy: "post_tag"
    url: "http://localhost/tag/hardware-project/"
  - 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/"
indiv:
  - name: "Robert Trelease"
    slug: "robert-trelease"
    taxonomy: "indiv"
    url: "http://localhost/indiv/robert-trelease/"
publication: "Sync"
publication_r:
  id: 10243
  title: "SYNC"
  type: "periodical"
  url: "http://localhost/periodical/sync-magazine/"
authors: "Robert Trelease"
volume: "2"
issue: "3"
issues_articles:
  - id: 26643
    title: "SYNC v2 n3"
    type: "issue"
    url: "http://localhost/issue/sync-v2-n3/"
pages: "28-31"
pubdate: "May/June 1982"
archive_link: false
volumeissue: "v2n3"
---

# Keyboard/System Conversion: The First 40/1 Keys

The fundamental conversion described here can be made with almost any KB switch array. 40 keys, new or used, so long as the switches are normally open and are closed with a key stroke.