Role Of IT In HRM

What is the role of IT in HRM in today's world ? What are the future prospective of HRM if it completely becomes IT based. What are the different IT Software / processes use by HR ?
& which are the areas that need to be updated ?

Even the software can help you to manage HRM for a company but to manage or understand the things and related issues can only be handled by a person who is qualified and experienced enough about HRM aspects.

IT will only support the HR interventions you are making; it can not replace human interface required in HR profession. Yes, a lot of rudimentary things like time & leave management, loans, advances, payrolling, PMS, tour advances, grievance redressal, etc can be properly done thru IT.
With the introduction of IT in HR processes, I have seen the ratio of total manpower to HR manpower, coming down from 80:1 to about 250:1 now, i.e. we require only 1 HR guy for every 250 in the company !
That means if you r a company of 2000 people, u may need only 8 HR guys to take care of the whole gamut of HR ! Power of IT !!