The accounting and payrollsoftware were purchased, but the sales software was developed in-house
财会和支付软件从外部购买，但销售软件是内部开发的
2
All that is really needed is to make the provided DLL files available to the payroll application, assuming that the client software supports standardized XML.
假设客户软件支持标准化的XML，所有真正需要的是使工资单应用程序可用所提供的DLL文件。
3
the national, state and local regulations regarding compensation and payroll taxes, and health care software companies to have physicians, nurses or other medical specialists.