Computers have undoubtedly made life easier for people today. One thing you will notice is that they have simplified and made things faster especially for business establishments who want a faster way of processing transactions and keeping track of reports when needed.
In the olden days, reports normally took weeks to months to prepare. Computers were there but the manual input using software such as Microsoft Excel only helped a tad bit. But today, thanks to modern programming, inputs and proper collection of data stored in databases have made life entirely easier. With one click, you can get your daily sales reports or even browse through transaction records without having to worry about inconsistency.
As far as hardware requirements are concerned, you will be surprised the even the Pentium I can be a good workstation to use. Normally, software programs are based on data transfer and the modules that they use do not require quite high specs.
But the reality today is that you can no longer buy these ancient Pentium I computers as we often see today the dawn of dual processors. As an alternative, you can always look at the AMD or Celeron processors which are a lot cheaper than the traditional dual core Pentium processors in the market. While many are apprehensive regarding their durability, all other components such as the memory modules and video cards will most certainly be minor since they can operate on either processor chosen by the end-use.