This report presents worldwide PC market volume per year for the period 2007-2016 and worldwide notebook PC market volume per year for the period 2007-2016, as well as worldwide PC market volume per quarter for the period 1Q 2010 - 4Q 2012 and worldwide notebook PC market volume per quarter for the period 1Q 2010 - 4Q 2012. The report includes forecasts of worldwide notebook PC market volume and share by region, by panel size, and by computing platform type. The report finds that affected by a number of adverse factors, the worldwide notebook PC market did not live up to expectations in 2011. Restricted by worldwide economy, worldwide notebook PC market is forecasted to experience the lowest level year-on-year growth in 2012 compared with previous years.