---
title: "Decimal Multiplication for the ZX-80"
type: "article"
slug: "decimal-multiplication-for-the-zx-80"
url: "http://localhost/article/decimal-multiplication-for-the-zx-80/"
markdown_url: "http://localhost/article/decimal-multiplication-for-the-zx-80.md"
published_at: "2020-10-27T17:08:12+00:00"
modified_at: "2024-06-23T01:10:16+00:00"
featured_image:
  url: "http://localhost/wp-content/uploads/2022/04/20230809-041332.jpg"
excerpt: "The 4K ZX80 ROM only performs integer math. This program does decimal multiplication."
category:
  - name: "Popular Electronics"
    slug: "popular-electronics"
    taxonomy: "category"
    url: "http://localhost/category/periodicals/popular-electronics/"
post_tag:
  - name: "1982"
    slug: "year-1982"
    taxonomy: "post_tag"
    url: "http://localhost/tag/year-1982/"
indiv:
  - name: "Loyd Redman"
    slug: "loyd-redman"
    taxonomy: "indiv"
    url: "http://localhost/indiv/loyd-redman/"
publication: "Popular Electronics"
publication_r:
  id: 10126
  title: "Popular Electronics"
  type: "periodical"
  url: "http://localhost/periodical/popular-electronics/"
authors: "Loyd Redman"
volume: "20"
issue: "2"
pages: "63"
pubdate: "February 1982"
archive_link: false
archiveurl: "http://www.americanradiohistory.com/Archive-Poptronics/80s/1982/Poptronics-1982-02.pdf"
volumeissue: "v20n2"
---

# Decimal Multiplication for the ZX-80

The 4K ZX80 ROM only performs integer math. This program does decimal multiplication.