The invention discloses a plug-in type taxation
billing system. The plug-in type taxation
billing system comprises an automatic
upgrade module, a
data migration module, a plug-in loading module, a text interface module and an
invoice management module, wherein the automatic
upgrade module is used for being connected with a
server to download an
upgrade package and carrying out installation of upgrade modules in the upgrade
package, the
data migration module is used for reading service data of a low-version
billing system, carrying out format conversion on the service data and sending the service data to a set
database to carry out storage, the plug-in loading module is used for mounting all plug-in objects in a plug-in object
list on a created plug-in
function tree, and adding function objects to a
menu bar and a tool bar on a main form interface of the plug-in type taxation billing
system according to the plug-in
function tree, the text interface module is used for reading each sold note on a sold note
list, judging whether the format of a commodity description information meets the specifications or not, abandoning the sold notes which do not meet the specifications, carrying out update and calculation on discount data and a
list of invoices to be made, the
invoice management module is used for generating a list of invoices to be printed, and the invoices to be printed are provided with electronic signatures.