Ready References
Signal Conditioning and Data Acquisition Basics
Signal Conditioning and Data Acquisition Overview
AAVSO Membership Information
Notes on the Construction and Design of Instruments and Apparatus
Technique of High Vacuum
The Severity of an Earthquake
DNA Fingerprinting
Ready References 
Signal Conditioning and Data Acquisition Basics Signal Conditioning and Data Acquisition Overview 
Notes on the Construction and Design of Instruments and Apparatus