---
title: "Key Click Generator"
type: "article"
slug: "key-click-generator"
url: "http://localhost/article/key-click-generator/"
markdown_url: "http://localhost/article/key-click-generator.md"
published_at: "2020-10-27T17:18:37+00:00"
modified_at: "2024-06-23T00:43:45+00:00"
featured_image:
  url: "http://localhost/wp-content/uploads/2022/04/20230809-041332.jpg"
excerpt: "This simple circuit will produce an audible tone whenever the ZX80 screen is blanked, yielding a click to indicate key closure, or a steady tone during processing."
category:
  - name: "SYNC"
    slug: "sync"
    taxonomy: "category"
    url: "http://localhost/category/periodicals/sync/"
post_tag:
  - name: "1981"
    slug: "year-1981"
    taxonomy: "post_tag"
    url: "http://localhost/tag/year-1981/"
  - name: "Hardware project"
    slug: "hardware-project"
    taxonomy: "post_tag"
    url: "http://localhost/tag/hardware-project/"
  - name: "ZX80"
    slug: "zx80"
    taxonomy: "post_tag"
    url: "http://localhost/tag/zx80/"
model:
  - name: "Sinclair ZX80"
    slug: "zx80"
    taxonomy: "model"
    url: "http://localhost/model/zx80/"
indiv:
  - name: "Matthew Johnson"
    slug: "matthew-johnson"
    taxonomy: "indiv"
    url: "http://localhost/indiv/matthew-johnson/"
publication: "Sync"
publication_r:
  id: 10243
  title: "SYNC"
  type: "periodical"
  url: "http://localhost/periodical/sync-magazine/"
authors: "Matthew Johnson"
volume: "1"
issue: "3"
issues_articles:
  - id: 26637
    title: "SYNC v1 n3"
    type: "issue"
    url: "http://localhost/issue/sync-v1-n3/"
pages: "40"
pubdate: "May/June 1981"
archive_link: false
volumeissue: "v1n3"
---

# Key Click Generator

This simple circuit will produce an audible tone whenever the ZX80 screen is blanked, yielding a click to indicate key closure, or a steady tone during processing.