Semiconductor sales dropped to $20.8 bln in November 2008 from $23.1 bln in November 2007, the Semiconductor Industry Association reported. Sales through the first 11 months of the year rose 0.2% to $232.7 bln. November sales were 7.2% lower than the $22.4 bln in October 2008. Excluding memory products, chip sales declined 4.8% to $17.3 bln.