---
title: "Basics of Timex Sinclair 1000, ZX81 Basic"
id: 21081
type: "book"
slug: "basics-of-timex-sinclair-1000-zx81-basic"
url: "http://localhost/book/basics-of-timex-sinclair-1000-zx81-basic/"
markdown_url: "http://localhost/book/basics-of-timex-sinclair-1000-zx81-basic.md"
published_at: "2020-04-05T16:22:44+00:00"
modified_at: "2024-05-26T15:07:26+00:00"
author: "David Anderson"
featured_image:
  url: "http://localhost/wp-content/uploads/2020/04/Basics-of-Timex-Sinclair-1000-ZX81-BASIC.jpg"
excerpt: "Covers hierarchy of arithmetic operations; entering programs; branching; arrays; loops; multidimensional arrays; simulating library functions; using subroutines; SLOW and FAST mode; relational operators in logical decisions; plotting; graphics in strings; plotting; slicing; strings in arrays."
category:
  - name: "Books"
    slug: "book"
    taxonomy: "category"
    url: "http://localhost/category/book/"
post_tag:
  - name: "Reston Publishing Company"
    slug: "reston-publishing-company"
    taxonomy: "post_tag"
    url: "http://localhost/tag/reston-publishing-company/"
  - name: "TS 1000"
    slug: "ts1000"
    taxonomy: "post_tag"
    url: "http://localhost/tag/ts1000/"
  - name: "ZX81"
    slug: "zx81"
    taxonomy: "post_tag"
    url: "http://localhost/tag/zx81/"
model:
  - 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/"
indiv:
  - name: "Allen H. Wolach"
    slug: "allen-h-wolach"
    taxonomy: "indiv"
    url: "http://localhost/indiv/allen-h-wolach/"
authors: "Allen H. Wolach"
publisher: "Reston Pub. Co."
publisher_publications:
  - id: 11225
    title: "Reston Publishing Company"
    type: "company"
    url: "http://localhost/company/reston-publishing-company/"
date: "1983"
isbn: "978-0-8359-0347-9"
zotero_id: "MS56EHQF"
---

# Basics of Timex Sinclair 1000, ZX81 Basic

Covers hierarchy of arithmetic operations; entering programs; branching; arrays; loops; multidimensional arrays; simulating library functions; using subroutines; SLOW and FAST mode; relational operators in logical decisions; plotting; graphics in strings; plotting; slicing; strings in arrays.