---
title: "QZX v2 n11"
id: 49028
type: "issue"
slug: "qzx-v2-n11"
url: "http://localhost/issue/qzx-v2-n11/"
markdown_url: "http://localhost/issue/qzx-v2-n11.md"
published_at: "2023-02-04T21:34:44+00:00"
modified_at: "2023-02-04T21:34:44+00:00"
author: "David Anderson"
featured_image:
  url: "http://localhost/wp-content/uploads/2022/04/20230809-041332.jpg"
category:
  - name: "QZX"
    slug: "qzx"
    taxonomy: "category"
    url: "http://localhost/category/periodicals/qzx/"
  - name: "TS Specific"
    slug: "ts-specific"
    taxonomy: "category"
    url: "http://localhost/category/periodicals/ts-specific/"
periodical_issues:
  - id: 21219
    title: "QZX"
    type: "periodical"
    url: "http://localhost/periodical/qzx/"
volume: "2"
number: "11"
issue_date: "October 1984"
issues_articles:
  - id: 20428
    title: "A Z80 machine language program to use the ZX81 as an audio frequency counter"
    type: "article"
    url: "http://localhost/article/a-z80-machine-language-program-to-use-the-zx81-as-an-audio-frequency-counter/"
---

# QZX v2 n11