An HR system is, simply put, a system that allows you to enter and track your staff data. Most HR systems typically include the following features...
An HR system makes it easy for you to keep important information up to date. Such as name, address, date of birth, next of kin, all that good stuff.
An HR system lets you keep all important documents organised. Such as employee handbooks and safety guidelines.
An HR system automates attendance tracking so you don't have to manually calcuate how many days off everybody has taken.
An HR system will often generate reports based on your data, which are extremely handy if you like to have an overview of your company stats.