Point of sale apparatus

Details Point of sale apparatus Point of sale apparatus

1989-03-10

1990-02-20

Shaw, Gareth D.

Boots, shoes, and leggings

G06F 900

Patent

active

049032003

ABSTRACT:
Point of sale apparatus wherein a general purpose computer is utilized in emulating the functions of an integrated POS system. A general purpose computer is employed with a cash register specific keyboard to provide a broad range of computational and data handling capabilities for the apparatus. To perform in conjunction with the general purpose computer for its general computing function, a typewriter-type keyboard is employed with the apparatus. A prioritized protocol is developed between the two keyboard functions giving operational priority to the latter keyboard. To achieve a necessary reaction to cash register keying operations, a device driver program is positioned at a high priority level in the BIOS area of memory of the general computer to develop a vector interrupt deriving a jump address approach to the execution of cash register key function commands.

REFERENCES:
patent: 3946220 (1976-03-01), Brobeck et al.
patent: 4328544 (1982-05-01), Baldwin et al.
patent: 4389707 (1983-06-01), Tsuzuki
patent: 4396985 (1983-08-01), Ohara
patent: 4630200 (1986-12-01), Ohmae et al.
patent: 4634845 (1987-01-01), Hale et al.
patent: 4722054 (1988-01-01), Yorozu et al.
Ohio Restaurant Journal, Nov./Dec., 1984, p. 33.

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