 In the early 1980s, the availability of bit-slice and 16-bit microprocessors started to revolutionise personal computing and high resolution computer graphics terminals which now increasingly became intelligent, semi-standalone and standalone workstations.Graphics and application processing were increasingly migrated to the intelligence in the workstation or PC rather than continuing to rely on central mainframe and mini-computers.Pearson and his colleagues recognized the opportunity these microprocessors offered to graphics technology over the old technologies of storage tube and refresh vector graphics arrangements.