The Youngs Computer Register for the ZX-80 and ZX-81 has just been re-published. It now contains an extra supplement with invaluable information on the Sinclair market.
The guide lists the names and addresses of most software and hardware companies and also provides information on products. As with the previous issue, the register is split into sections for easy reference.
Together with the supplement, it can be obtained from Youngs Computer Publications for £3.95. The supplement is also available separately for £2.