Return on Investment Authors Russell Crum Publication Syntax Pub Details Volume: 4 Issue: 8 Date August 1983 Pages 6-9 Read the article See all articles from Syntax/Syntax ZX80 v4 n8 Program computes compounded annual rates of return on single investments and monthly annuities. Products Downloadable Media Related Articles Tags Syntax, 1983, TS 1000, Type-in program People Russell Crum