This fourth volume in a series that has sold more than 175,000 copies, includes schematics and descriptions for the latest circuitry used in computers, controls, instrumentation, telecommunications, sensors, and numerous other electronics applications. An ideal companion to previous volumes, this monumental work features more than 1,000 all-new circuits in 100 alphabetically-arranged categories. Clear, comprehensive, and meticulously organized, this is by far the best source of modern circuit designs for hobbyists and professionals.