various PC compatibles, and the $3,499 Tandy 6000 Xenix system. The company acquired GRiD Systems in March 1988. Grid Systems was a laptop manufacturer whose products included the GRiD Compass (1982), GRiDCase (1985), GRiDLite (1987), and GRiDPad (1989) tablet computer. Tandy also produced the short-lived Tandy 1100FD and Tandy 1100HD notebooks. Released in 1989, the 1100 Series was based on the popular NEC V20 processor clocked at 8 MHz. Tandy also produced software for its computers running DOS, in the form of Tandy Deskmate. That same year, Tandy introduced the WP-2, a solid-state notebook computer that was a rebadged Citizen CBM-10WP. Eventually, in the early 1990s, Tandy Corporation sold its computer-manufacturing business to AST Computers, and all Tandy computer lines were terminated. When that occurred, Radio Shack stores began selling computers made by other manufacturers, such as Compaq. In 1992, the company introduced the Tandy Zoomer, a predecessor to the Palm Pilot, designed by Jeff Hawkins. Also that year, the company produced an interactive, multimedia CD-ROM player called the Tandy Video Information System (VIS). Like the Tandy computers, it was based on the IBM PC architecture and used a version of Microsoft Windows. Tandy even produced a line of floppy disks, and continued producing IBM PC compatibles until the end of the Intel 486 era. Tandy stores In 1973, Tandy Corporation began an expansion program outside their home market of the US, opening a chain of RadioShack-style stores in Europe and Australia under the Tandy name. The first store to open was in Aartselaar, Belgium on August 9, 1973. The first UK store opened October 11, 1973, in Hall Green, Birmingham. Initially, these new stores were under direct ownership of Tandy Corporation. In 1986, Tandy Corporation formed its subsidiary InterTAN as separate entity though connections between them were still visible. For example, catalogue number compatibility was maintained so that the same catalogue number in both companies would refer to the same item. Tandy stores in the UK sold mainly own-brand goods under the 'Realistic' label and the shops were distinguished on the high street by continuing to use written sales receipts and a cash drawer instead of a till as late as the early 1990s. Staff were required to take the name and address of any customer who made a purchase, however small, in order to put them on the company's brochure mailing list, which often caused disgruntlement. A popular