Use the Sinclair's expression evaluator to make a calculator.
ZX81 Calculator AuthorsAlex BurrPublicationSyntaxPub DetailsSyntax/Syntax ZX80 v3 n12Volume: 3 Issue: 12DateDecember 1982Pages18Read the articleSee all articles from Syntax/Syntax ZX80 v3 n12 Use the Sinclair’s expression evaluator to make a calculator. TagsSyntax 1982 TS 1000 Type-in program ZX81 PeopleAlex Burr (K5XY)