the QL was launched in 1984, bundled with Quill, Archive, Abacus and Easel; respectively a word processor, database, spreadsheet, and business graphics application. These were later ported to DOS and were made available for the IBM PC and ACT Sirius and Apricot computers, collectively called PC-Four, or Xchange in an enhanced version. Psion Organiser (1984) In 1984, Psion first entered the hardware market with the Psion Organiser, an early handheld computer, in appearance resembling a pocket calculator with an alphanumeric computer keyboard. In 1986, the vastly improved Psion Organiser II was released, and was assembled by Speedboard Assembly Services. Its success led the company into a decade long period of Psion Computer and operating system development. It included the simple-to-use Open Programming Language (OPL) for database programming, which sparked a large independent software market. In 1987, Psion began developing its SIxteen Bit Organiser (SIBO) family of devices and its own new multitasking operating system named EPOC, to run its third generation product, Laptops (MC), industrial handhelds (HC and Workabout) and PDA (Series 3) products. It is often rumoured that EPOC stands for "Electronic Piece Of Cheese" however Colly Myers, who was Symbian's CEO from founding until 2002, said in an interview that it stood for 'epoch' and nothing more. This development effort produced the clamshell QWERTY-based Psion Series 3 palmtops (1993–98), which sold in the hundreds of thousands, and the Psion MC-series laptops, which sold poorly compared to the DOS-based laptops of the era. A second effort, dubbed Project Protea, produced the Psion Series 5 for sale in 1997, a completely new product from the 32-bit hardware upwards through the OS, UI, and applications. It is still remembered for its high quality keyboard which, despite its size, allowed for touch-typing. However, the new feel of the product, and the removal of certain familiar quirks, alienated loyal Series 3 users, who tended to stick with their PDAs rather than upgrade. In 1999, Psion released the Psion Series 7, which was much like a larger version of the Series 5, but with a double-size VGA-resolution screen that featured 256 colours (the Series 5 had a half-VGA screen with 16 grey shades). It was followed by the very similar Psion netBook. Psion was being challenged by the arrival of cheaper PDAs such as the Palm Pilot, and PocketPCs running Microsoft's Windows CE, and in 2003, Psion released a Netbook Pro running Windows CE