---
title: "T-S Horizons n21"
id: 26864
type: "issue"
slug: "t-s-horizons-n21"
url: "http://localhost/issue/t-s-horizons-n21/"
markdown_url: "http://localhost/issue/t-s-horizons-n21.md"
published_at: "2020-09-03T00:15:57+00:00"
modified_at: "2022-12-11T00:59:57+00:00"
author: "David Anderson"
featured_image:
  url: "http://localhost/wp-content/uploads/2020/09/20230809-041317.jpg"
category:
  - name: "Periodicals"
    slug: "periodicals"
    taxonomy: "category"
    url: "http://localhost/category/periodicals/"
  - name: "T-S Horizons"
    slug: "t-s-horizons"
    taxonomy: "category"
    url: "http://localhost/category/periodicals/t-s-horizons/"
periodical_issues:
  - id: 10247
    title: "T-S Horizons"
    type: "periodical"
    url: "http://localhost/periodical/t-s-horizons/"
number: "21"
issue_date: "December 1986"
issues_articles:
  - id: 8536
    title: "Bank Switching… The Timex/Sinclair 2068 Computer, Part III and IV"
    type: "article"
    url: "http://localhost/article/bank-switching-the-timex-sinclair-2068-computer-part-iii-and-iv/"
  - id: 8549
    title: "Totally Safe Machine Code for the ZX81 and TS1000"
    type: "article"
    url: "http://localhost/article/totally-safe-machine-code-for-the-zx81-and-ts1000/"
  - id: 8556
    title: "ZX81 Resources"
    type: "article"
    url: "http://localhost/article/zx81-resources/"
  - id: 8560
    title: "The Kruncher"
    type: "article"
    url: "http://localhost/article/the-kruncher/"
  - id: 8569
    title: "In Spec: Wafer Tips (The Wafadriver Column)"
    type: "article"
    url: "http://localhost/article/in-spec-wafer-tips-the-wafadriver-column/"
  - id: 8571
    title: "Byte Power"
    type: "article"
    url: "http://localhost/article/byte-power/"
  - id: 10572
    title: "Enter: Please Read!"
    type: "article"
    url: "http://localhost/article/enter-please-read/"
advertisers:
  - id: 20330
    title: "Foote Software"
    type: "company"
    url: "http://localhost/company/foote-software/"
  - id: 11024
    title: "Knighted Computers"
    type: "company"
    url: "http://localhost/company/knighted-computers/"
  - id: 10917
    title: "Hal-Tronix, Inc."
    type: "company"
    url: "http://localhost/company/hal-tronix-inc/"
  - id: 11370
    title: "SyncWare Co."
    type: "company"
    url: "http://localhost/company/syncware-co/"
  - id: 11273
    title: "Semper Software"
    type: "company"
    url: "http://localhost/company/semper-software/"
  - id: 11396
    title: "Time Designs Magazine Company"
    type: "company"
    url: "http://localhost/company/time-designs-magazine-company/"
  - id: 11469
    title: "Zebra Systems, Inc."
    type: "company"
    url: "http://localhost/company/zebra-systems/"
  - id: 27769
    title: "WIDJUP Company"
    type: "company"
    url: "http://localhost/company/widjup-company/"
  - id: 10671
    title: "Banta Software"
    type: "company"
    url: "http://localhost/company/banta-software/"
  - id: 11075
    title: "Markel Software"
    type: "company"
    url: "http://localhost/company/markel-software/"
  - id: 10612
    title: "A+ Computer Response"
    type: "company"
    url: "http://localhost/company/a-computer-response/"
archiveurl: "https://archive.org/stream/TSHorizons/T-sHorizonsN21"
---

# T-S Horizons n21