ISTUG Newsletter Jan-Feb 1991 Date: January - February 1991 Read the issue See all issues of ISTUG Newsletter Articles Show all ZX80 MicroAce ZX81 TS 1000 TS 1500 TS 2000 TS 2048 TS 2068 TC 2068 ZX Spectrum QL Z88 TS 2050 TS 2040 Reference Type-in program Downloadable Hardware project Hardware review Software review Book review Tutorial ISTUG Meeting Sinclair ZX81 SchematicZX81 Reference Stepping Rate FixTS 2068 Type-in program More News You Can Use From Across The PondTS 2068 ZX Spectrum
