This brand is divided into eleven series :
F series (DSC-Fxxx) – prosumer cameras with long zooms
H series (DSC-Hxx) – long zoom cameras
L series (DSC-Lxx) – compact cameras
M series (DSC-Mxx) – full featured cameras with high quality video capture
N series (DSC-Nxx) – cameras with touch controlled lcd screens
P series (DSC-Pxxx) – mid-range point and shoot cameras
R series (DSC-Rx) – prosumer, Digital SLR like cameras
S series (DSC-Sxx) – previously middle to high end, now entry-level cameras
T series (DSC-Txx) – slimline, ultra-compact cameras
U series (DSC-Uxx) – ultra-compact cameras
V series (DSC-Vxx) – prosumer cameras
W series (DSC-Wxx) – entry-level to intermediate cameras
There is a strong likelihood that the DSC prefix is an acronym for "Digital Still Camera".
Oh, really? Who cares.