This episode features SpeedCalc, released in 1986 by Compute! Publishing. It was developed by Charles Brannon & Kevin Martin.
Podcast: Download
Publication Article
First page of the article presenting the program from Compute! March 1986:
SpeedCalc in Action
Booting
Nasty colors, perhaps chosen and set by someone other than the authors. 
Showing available memory at boot.
Editing
Much better color combination set. 
Saving the spreadsheet. 
Setting number of decimal places. 
Copying a block of cells. 
Turning auto cell recalc on. 
Forcing a cell recalculation now. 
Defining a cell formula. 
There is a rounding error here. I couldnt reproduce the same result as with the same values in several other spreadsheets. 
Printing 
Setting cell width. 
Loading a file. 
Disk directory from within SpeedCalc. 
Ruh-roh. Error.
Manual
The instructions are included with the published article. See it for full details. Here is a capture of the keyboard shortcuts:
Print Output
Partial printout of budget spreadsheet:
Show Links
- AtariWiki: https://www.atariwiki.org/wiki/Wiki.jsp?page=SpeedCalc
- Atari Magazines: https://www.atarimagazines.com/compute/issue70/076_1_SpeedCalc.php
- Inverse ATASCII S6 E5 Antic Calc Magic: https://inverseatascii.info/2021/01/24/s6e05-antic-software-calcmagic-supplement/
- Inverse ATASCII S3 E1 Compute! SpeedScript: https://inverseatascii.info/2016/09/12/s3e01-compute-scriptor-speedscript-3-supplement/
- Internet Archive – Compute! March 1986: https://archive.org/details/1986-03-compute-magazine
- US Debt Clock: https://www.usdebtclock.org/
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