This is a sell for: Data Acquisition (1991, DB30-1), Bipolar Power Transistors (1992, DB220-1) & Linear & Telecom ICs For Analog Signal Processing Applications (1994, DB500B) by Harris Semiconductor.  The books are in good condition. There is no writing, no rip or tears on the pages, and tight bindings. The covers have wear. Please contact me if you have any questions.