---
title: "Easy Add-on Projects for Spectrum, ZX81 & Ace"
id: 71779
type: "book"
slug: "easy-add-on-projects-for-spectrum-zx81-ace"
url: "http://localhost/book/easy-add-on-projects-for-spectrum-zx81-ace/"
markdown_url: "http://localhost/book/easy-add-on-projects-for-spectrum-zx81-ace.md"
published_at: "2026-10-08T22:21:58+00:00"
modified_at: "2026-10-08T22:21:59+00:00"
author: "David Anderson"
featured_image:
  url: "http://localhost/wp-content/uploads/2026/10/BookReaderImages-1.jpg"
excerpt: "This book describes how to build electronic circuits which you can attach to your ZX Spectrum, ZX81 or Jupiter Ace. All the devices have been tested with all of these computers. Most of the circuits probably work just as well when connected to a ZX80 micro or could be adapted to do so fairly easily,…"
category:
  - name: "Books"
    slug: "book"
    taxonomy: "category"
    url: "http://localhost/category/book/"
post_tag:
  - name: "Jupiter Ace"
    slug: "jupiter-ace"
    taxonomy: "post_tag"
    url: "http://localhost/tag/jupiter-ace/"
  - name: "TS 1000"
    slug: "ts1000"
    taxonomy: "post_tag"
    url: "http://localhost/tag/ts1000/"
  - name: "TS 2068"
    slug: "ts2068"
    taxonomy: "post_tag"
    url: "http://localhost/tag/ts2068/"
  - name: "ZX Spectrum"
    slug: "zx-spectrum"
    taxonomy: "post_tag"
    url: "http://localhost/tag/zx-spectrum/"
  - name: "ZX81"
    slug: "zx81"
    taxonomy: "post_tag"
    url: "http://localhost/tag/zx81/"
model:
  - name: "Jupiter Ace"
    slug: "jupiter-ace"
    taxonomy: "model"
    url: "http://localhost/model/jupiter-ace/"
  - name: "Sinclair ZX Spectrum"
    slug: "zxspectrum"
    taxonomy: "model"
    url: "http://localhost/model/zxspectrum/"
  - 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/"
  - name: "Timex/Sinclair 2068"
    slug: "ts-2068"
    taxonomy: "model"
    url: "http://localhost/model/ts-2068/"
authors: "Owen Bishop"
publisher: "Bernard Babani"
publisher_publications:
  - id: 10850
    title: "Electronic Technology Today Inc."
    type: "company"
    url: "http://localhost/company/electronic-technology-today-inc/"
pages: "196"
date: "1983"
archiveurl: "https://archive.org/details/easy-add-on-projects-for-spectrum-zx-81-ace-owen-bishop"
---

# Easy Add-on Projects for Spectrum, ZX81 & Ace

This book describes how to build electronic circuits which you can attach to your ZX Spectrum, ZX81 or Jupiter Ace. All the devices have been tested with all of these computers. Most of the circuits probably work just as well when connected to a ZX80 micro or could be adapted to do so fairly easily, but they have not been tested with this computer, and full connecting details are not given here.