Input/Output Board lets you add on peripherals Authors Publication Timex Sinclair User Pub Details Volume: 1 Issue: 1 Date June 1983 Pages 17 Read the article See all articles from Timex Sinclair User n1 Micro Developments’ I/O boards. Products Downloadable Media Related Articles Tags Timex Sinclair User, 1983, Hardware review, Micro Developments, TS 1000 People No people associated with this content.