Exterior view of National Semiconductor headquarters in Santa Clara, Calif., Monday, April 4, 2011. Texas Instruments Inc. is buying National Semiconductor for $6.5 billion in a marriage of two of the... more 
Exterior view of National Semiconductor headquarters in Santa Clara, Calif., Monday, April 4, 2011. Texas Instruments Inc. is buying National Semiconductor for $6.5 billion in a marriage of two of the world's premier makers of analog chips, which are widely used in electronics to transform signals such as sound into digital form that computers can understand. less 
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Associated Press | Photo By Paul Sakuma
Tue, Apr 5, 2011 6:09 AM EDT