---
title: "Surplus Keyboard Improvements for Extra Shifted Keys"
type: "article"
slug: "surplus-keyboard-improvements-for-extra-shifted-keys"
url: "http://localhost/article/surplus-keyboard-improvements-for-extra-shifted-keys/"
markdown_url: "http://localhost/article/surplus-keyboard-improvements-for-extra-shifted-keys.md"
published_at: "2020-10-27T17:09:59+00:00"
modified_at: "2025-11-04T13:24:13+00:00"
featured_image:
  url: "http://localhost/wp-content/uploads/2022/04/20230809-041332.jpg"
excerpt: "The TI 99-4A keyboards, still widely available, are an ideal unit for the ZX81/TS1000 computers. Recent and not so recent articles have shown how the shifted keys on the KB-0 line cam be connected using two diodes. This method can give you four useful and often used shifted keys: EDIT, DELETE, quotation marks, and FUNCTION."
category:
  - name: "T-S Horizons"
    slug: "t-s-horizons"
    taxonomy: "category"
    url: "http://localhost/category/periodicals/t-s-horizons/"
post_tag:
  - name: "Hardware project"
    slug: "hardware-project"
    taxonomy: "post_tag"
    url: "http://localhost/tag/hardware-project/"
  - name: "TS 1000"
    slug: "ts1000"
    taxonomy: "post_tag"
    url: "http://localhost/tag/ts1000/"
  - name: "ZX81"
    slug: "zx81"
    taxonomy: "post_tag"
    url: "http://localhost/tag/zx81/"
model:
  - 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: "Walter Komlosy"
    slug: "walter-komlosy"
    taxonomy: "indiv"
    url: "http://localhost/indiv/walter-komlosy/"
publication: "T-S Horizons"
publication_r:
  id: 10247
  title: "T-S Horizons"
  type: "periodical"
  url: "http://localhost/periodical/t-s-horizons/"
authors: "Walter Komlosy"
issue: "18"
issues_articles:
  - id: 26861
    title: "T-S Horizons n18"
    type: "issue"
    url: "http://localhost/issue/t-s-horizons-n18/"
pages: "16-17"
pubdate: "April 1986"
archive_link: false
volumeissue: "vn18"
---

# Surplus Keyboard Improvements for Extra Shifted Keys

The TI 99-4A keyboards, still widely available, are an ideal unit for the ZX81/TS1000 computers. Recent and not so recent articles have shown how the shifted keys on the KB-0 line cam be connected using two diodes. This method can give you four useful and often used shifted keys: EDIT, DELETE, quotation marks, and FUNCTION.