Definition - What does System Unit mean? A system unit is the part of a computer that houses the primary devices that perform operations and produce results for complex calculations. It includes the motherboard, CPU, RAM and other components, as well as the case in which these devices are housed. This unit performs the majority of the functions that a computer is required to do.
size constancy - the tendency to perceive the veridical size of a familiar object despite differences in their distance (and consequent differences in the size of the pattern projected on the retina of the eye)
By Klarity In Big Data. What is âbig dataâ? Given its widespread usage across mass media environments, it is not surprising that the precise meaning of the term is often vague. Big data can be understood as the convergence of four dimensions, or the four Vâs: volume, variety, velocity and veracity. The 4Vâs is a data management trend that was conceived to help organisations realise and cope with the emergence of big data. Volume. This dimension refers to the quantity of data, as big data is frequently defined in terms of massive data sets with measures such as petabytes and zettabytes commonly referenced. And these vast amounts of data are generated every second. This used to be employee-created data.