- portable distress signal - a portable 'Mayday flare' for the motorist with engine problems, the pleasure sailor in trouble, or the stranded mountaineer
- ZX extensions - more bytes, more inputs, more outputs
- disco drum - a choice of rasta, funky, or disco beats . . . or would you really prefer the monotonous 'boom-boom' of other drum synthesizers?
- daisywheel typewriter printer interface - an inexpensive high quality computer printer
- maximum and minimum memory - analogue voltages remembered . . . . . digitally!
- lead-acid battery charger - a two-stage design to enable fast charging without reducing the battery's lifespan
- wireless microphone - a high quality FM transmitter
- merging BASIC programs - a utility program to merge two distinct basic programs and making use of utility software from the OS disk 2
- echo sounder - sonar for yachts
- versatile audio peak meter - with peak hold facility
de
en
fr
nl