---
title: "A Checkbook Program Using Abacus"
type: "article"
slug: "a-checkbook-program-using-abacus"
url: "http://localhost/article/a-checkbook-program-using-abacus/"
markdown_url: "http://localhost/article/a-checkbook-program-using-abacus.md"
published_at: "2026-01-19T20:19:59+00:00"
modified_at: "2026-01-19T20:26:31+00:00"
featured_image:
  url: "http://localhost/wp-content/uploads/2022/04/20230809-041332.jpg"
category:
  - name: "CATS Newsletter"
    slug: "cats-newsletter"
    taxonomy: "category"
    url: "http://localhost/category/periodicals/cats-newsletter/"
post_tag:
  - name: "QL"
    slug: "ql"
    taxonomy: "post_tag"
    url: "http://localhost/tag/ql/"
  - name: "Type-in program"
    slug: "type-in-program"
    taxonomy: "post_tag"
    url: "http://localhost/tag/type-in-program/"
model:
  - name: "Sinclair QL"
    slug: "sinclair-ql"
    taxonomy: "model"
    url: "http://localhost/model/sinclair-ql/"
indiv:
  - name: "Charles Reise"
    slug: "charles-reise"
    taxonomy: "indiv"
    url: "http://localhost/indiv/charles-reise/"
publication_r:
  id: 35941
  title: "CATS Newsletter"
  type: "periodical"
  url: "http://localhost/periodical/cats-newsletter/"
authors_r:
  - name: "Charles Reise"
    slug: "charles-reise"
    taxonomy: "indiv"
    url: "http://localhost/indiv/charles-reise/"
volume: "6"
issue: "7b"
issues_articles:
  - id: 38880
    title: "CATS v6 n7b"
    type: "issue"
    url: "http://localhost/issue/cats-v6-n7b/"
pages: "9"
pubdate: "November 1988"
archive_link: false
---

# A Checkbook Program Using Abacus