See all articles from Syntax/Syntax ZX80 v3 n3
Letters from readers including a STOP/listing trick via POKE (Andrew Lederman), a linear regression program offer and byte-saving tips (Paul Ezra), a heat sink painting debate (Chuck Hutton), interest in FORTH for ZX80/81 (Rich Holmes), 16K RAM mechanical fixes and keyboard project (Larry Lockwood), and keyboard project with speaker and switches (Russ Gagnon).