A computer system launched by
Sinclair Research in 1984.
QL stood for "Quantum Leap". A successor to the
ZX Spectrum, the QL was designed with the hobbiest and small business market in mind. It used a Motorola M68008 processor and came with 128 kB of RAM as standard, and could be connected to a monitor or TV for display. It used a multitasking operating system, QDOS, and was bundled with a suite of productivity software (wordprocessor, spreadsheet, database and graphics) written by Psion
?. It had a built-in advanced BASIC interpreter.
The QL was plagued by a number of problems from release, particularly bugs in the QDOS operating system on ROM, which lead to multiple releases of the firmware. The machine also suffered from reliability problems of its built-in "microdrive" tape-loop storage systems (first seen as add-ons for the ZX Spectrum). Although the computer was rather advanced for its time, and relatively cheap, it failed to sell well and was eventually discontinued.
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