The Sinclair QL was Sir Clive Sinclair's attempt at a computer for business. It was released in January 1984, a few days before the Apple [[Macintosh]] and a few months before the Amstrad CPC 464.
The QL signalled a move away from Sinclair's "traditional" use of the Z80 processor to a multi-tasking system based on a 68008 processor and 8049 second processor.