I love this line "Early computers used batch processing which, is mostly unheard of today". Cripes! What do you think happens to all the cheques that poeple still write? They are processed by the big banks in a nightly "batch process" for clearing. Batch-mode processing (as opposed to interactive routines) is still the bread and butter of "real" data processing on the larger systems, such as zSeries mainframes and the smaller iSeries (formerly known as AS/400) midrange systems. I love Slashdot but somebody needs to keep kids with no knowledge of the larger IT world beyond their PCs from posting this kind of disinformation. it's like my other favourite question to ask these kind of "PC kiddies"... What's a mainframe? They invariably say "computers from the 1960s that used tubes and stuff" oblivious to the fact that they just accessed the bank's shiny new 2012 zSeries Mainframe from their iPhone. LOL I feel like the old guy keeping the kids off the grass every time I have to remind people of this stuff.