---
title: "Sine Name"
id: 76608
type: "computer_media"
slug: "sine-name"
url: "http://localhost/computer_media/sine-name/"
markdown_url: "http://localhost/computer_media/sine-name.md"
published_at: "2026-11-11T08:02:20+00:00"
modified_at: "2026-11-11T08:02:20+00:00"
author: "David Anderson"
featured_image:
  url: "http://localhost/wp-content/uploads/2026/11/sine-name-1.png"
excerpt: "Print any short string as a vertical sine wave that scrolls up the ZX81 screen."
post_tag:
  - name: "Downloadable"
    slug: "downloadable"
    taxonomy: "post_tag"
    url: "http://localhost/tag/downloadable/"
  - 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: "Mark Freitas"
    slug: "mark-freitas"
    taxonomy: "indiv"
    url: "http://localhost/indiv/mark-freitas/"
genre:
  - name: "Graphics"
    slug: "graphics"
    taxonomy: "genre"
    url: "http://localhost/type/graphics/"
media_type: "Program"
programmers:
  - name: "Mark Freitas"
    slug: "mark-freitas"
    taxonomy: "indiv"
    url: "http://localhost/indiv/mark-freitas/"
download_url: "https://archive.org/download/timex-sinclair-software-archive/Sine%20Name%20%281982%29%28Freitas%2C%20Mark%29%28TS1000%29%28US%29%28Program%29.zip"
mediadate: "1982"
images:
  - url: "http://localhost/wp-content/uploads/2026/11/sine-name-1.png"
article_media:
  - id: 20019
    title: "Sine Name"
    type: "article"
    url: "http://localhost/article/sine-name/"
media_type_tags: "Graphics"
license: false
---

# Sine Name

Enter a string of up to 12 characters, and the program prints it over and over at the bottom of the screen, shifted left and right along a sine curve, and SCROLLs it up, so the text weaves up the screen. Graphics characters give op-art patterns. It runs until you press BREAK.

Change SIN in line 20 to COS for a cosine version. For an 8K ZX80 the article adds 37 PAUSE 30.

Published in Syntax August 1982 ([Sine Name](https://timexsinclair.com/article/sine-name/)).

## Source Code

```
   5 INPUT A$
  10 FOR A=0 TO 6.3 STEP .2
  20 LET Y=SIN A
  30 PRINT AT 21,(10*Y+10);A$
  35 SCROLL
  40 NEXT A
  50 GOTO 10
```