---
title: "Building an RS-232 Port into the 2050 Modem"
type: "article"
slug: "building-an-rs-232-port-into-the-2050-modem"
url: "http://localhost/article/building-an-rs-232-port-into-the-2050-modem/"
markdown_url: "http://localhost/article/building-an-rs-232-port-into-the-2050-modem.md"
published_at: "2026-03-15T00:18:55+00:00"
modified_at: "2026-03-15T00:18:55+00:00"
featured_image:
  url: "http://localhost/wp-content/uploads/2022/04/20230809-041332.jpg"
excerpt: "Step-by-step guide to installing the Zebra RS-232 circuit board inside the TS2050 modem case with a 3PDT switch for selecting between modem and RS-232 modes. Includes wiring diagrams, pin assignments for a Xerox Memorywriter connection, and BASIC software for driving the printer via the RS-232 port. Uses DS14C88/DS14C89 CMOS driver chips to reduce heat."
category:
  - name: "Timelinez"
    slug: "timelinez"
    taxonomy: "category"
    url: "http://localhost/category/periodicals/timelinez/"
post_tag:
  - name: "Hardware project"
    slug: "hardware-project"
    taxonomy: "post_tag"
    url: "http://localhost/tag/hardware-project/"
  - name: "TS 2050"
    slug: "ts-2050"
    taxonomy: "post_tag"
    url: "http://localhost/tag/ts-2050/"
model:
  - name: "Timex/Sinclair 2068"
    slug: "ts-2068"
    taxonomy: "model"
    url: "http://localhost/model/ts-2068/"
indiv:
  - name: "Loren Latker"
    slug: "loren-latker"
    taxonomy: "indiv"
    url: "http://localhost/indiv/loren-latker/"
publication_r:
  id: 21571
  title: "Timelinez"
  type: "periodical"
  url: "http://localhost/periodical/timelinez/"
authors_r:
  - name: "Loren Latker"
    slug: "loren-latker"
    taxonomy: "indiv"
    url: "http://localhost/indiv/loren-latker/"
volume: "5"
issue: "4"
issues_articles:
  - id: 38851
    title: "Timelinez v5 n4"
    type: "issue"
    url: "http://localhost/issue/timelinez-v5-n4/"
pages: "5"
pubdate: "April 1987"
archive_link: false
---

# Building an RS-232 Port into the 2050 Modem

Step-by-step guide to installing the Zebra RS-232 circuit board inside the TS2050 modem case with a 3PDT switch for selecting between modem and RS-232 modes. Includes wiring diagrams, pin assignments for a Xerox Memorywriter connection, and BASIC software for driving the printer via the RS-232 port. Uses DS14C88/DS14C89 CMOS driver chips to reduce heat.