ZX-81 means Sinclair Timex personal computer, based on Z-80 microprocessor in
Hardware
Similar to ZX-81
ADFS - Advanced Disc Filing System
ADM - Analog Dynamic Memory
ADP - Automatic Data Processing
ADP - Active Distribution Panel
ADSM - Adstar Distributed Storage Management
ADTM - Apollo Desktop Teleconferencing Module
ADU - Analog-to-Digital Unit
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