Casu Electronics Advert - June 1984
From Practical Computing
Compact System for Professionals
Once mentioned in Parliament[1] as one of only two British computer manufacturers on the government's Central Computer and Telecommunications Agency list of approved suppliers to have also been members of the British Microcomputer Manufacturers Group - the other being Comart - Casu seemed to specialise in compact desktop microcomputers, with models including the Mini C and this, the Micro PX.
Based in Uxbridge, Middlesex, the company's unusual name was said to have been formed from the first names of the founder's daughters - Caroline and Suzanne[2].
It was also another of those companies that despite building micros with components which mostly came from the Far East or the US, liked to claim its computers as being all-British.
The Micro PX, measuring only 30 centimeters square, was based on a 6MHz Intel iAPX 186, otherwise known as the 80186 - a processor that wasn't hugely popular as it wasn't motherboard-compatible with the rest of Intel's x86 line, although that didn't stop Practical Computing from calling it "the chip to have"[3] in its June 1984 issue.
Casu's compact micro shipped with 256K of RAM, 3½" floppy drives formatted to 737K, and Concurrent CP/M 3.1, which by now had been renamed as Concurrent DOS version 4 in an effort to distance itself from its 1970s legacy.
The single-disk version of the micro retailed for £1,650, or about £6,970 in 2025, with the 20M Rodime Winchester system going out for £3,450 - that's a hefty £14,500 now.
Date created: 24 March 2025
Sources
Text and otherwise-uncredited photos © nosher.net 2025. Dollar/GBP conversions, where used, assume $1.50 to £1. "Now" prices are calculated dynamically using average RPI per year.