A point of sales system and an optical reader

摘要

A POS system comprises a host computer (30) providing a centralized control over a plurality of scanners (101 to 10n), and a printer (50) for printing a batch setting bar code (100) or the like. A CPU (111) of a scanner (101) reads the changes in the setting from its own memory (181) when it receives a first transmission request (S1) command and then transmits the data to the host computer (30) as a first batch setting data (H1). From this first batch setting data (H1) a first batch setting bar code (500) is generated. When this first batch setting bar code (500) is read using a reader of a scanner (102 to 10n) whose setting has not been changed, the setting in the memory (182 to 18n) of this scanner (102 to 10n) is changed to the setting represented by the first batch setting data (500). Thus, setting in a plurality of scanners (101 to 10n) can speedily and accurately be changed.