Across: 4 Indirect, 8 Kempston, 9 Data area, 10 Absolute, 11 Break, 12 Mass, 14 Hundredth, 15 LD, 17 TV, 18 Coherence, 21 Skip, 22 Video, 23 Gray code, 24 Test data, 26 Mikrogen, 27 Tricycle.

Down: 1 Keyboard, 2 Spools, 3 Structured, 4 Indexed, 5 Dot, 6 Read rate, 7 Ceefax, 13 Benchmarks, 16 Domestic, 17 Twiddles, 19 End game, 20 Linear, 21 Sector, 25 ADC.