Data Processing : Processing data is the most complex function of a computer system. It is where the computer itself (as opposed to a peripheral, e.g. a visual display unit or a printer) is brought into play together with suitable programs. We will discuss programs, or software, later; so here let us consider what kind of management decisions need to be taken in relation to the hardware - the computer itself. In practice, when you choose a computer system, you decide:

(I) What your aims are;

(2) What programs (software) will meet those aims; and

(3) What machines (hardware) will support the programs.

Figure: Choosing a Computer System.

Sometimes your aims affect the choice of hardware directly. For example, you require more than one person to gain access to the system at a time; you will need a multi-user system.

In defining your aims, you will define what data processing needs to take place and this will lead to a number of options - choices of programs. Once you have chosen a program for your task you will usually have a range of options, and a,set of parameters for choosing hardware you may ask:

Will you require a stand-alone workstation, a network, or a full multi-user system?

What size RAM (the computers own working memory) is required to support the program?

What size hard disk (data store) is required?

What data storage method will you use for backing up information?

What is the cost of the computer and its subsequent maintenance?