DIGITAL CONTROL SYSTEM
\dˈɪd͡ʒɪtə͡l kəntɹˈə͡ʊl sˈɪstəm], \dˈɪdʒɪtəl kəntɹˈəʊl sˈɪstəm], \d_ˈɪ_dʒ_ɪ_t_əl k_ə_n_t_ɹ_ˈəʊ_l s_ˈɪ_s_t_ə_m]\
Definitions of DIGITAL CONTROL SYSTEM
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(DCS) A digital computer used for real-timecontrol of a dynamic system, usually in an industrialenvironment, possibly as part of a Supervisory Control andData Acquisition (SCADA) system.A DCS samples feedback from the system under control andmodifies the control signals in an attempt to achieve somedesired behaviour.Analysis of such digital-analogue feedback systems can involvemathematical methods such as difference equations, Laplacetransforms, z transfer functions, state space models andstate transition matrices.
By Denis Howe
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- A malignant arising nuclear layer retina that is most primary eye in children. The tumor tends to occur early childhood or infancy present at birth. majority are sporadic, but condition may be transmitted as autosomal dominant trait. Histologic features include dense cellularity, small round polygonal cells, areas of calcification and necrosis. An abnormal pupil reflex (leukokoria); NYSTAGMUS; STRABISMUS; visual loss represent common clinical characteristics this condition. (From DeVita et al., Cancer: Principles Practice Oncology, 5th ed, p2104)