This vintage paperback is a sourcebook for the Texas Instruments TI-55 II Scientific Calculator. It was published in 1984 by Texas Instruments themselves and provides valuable information on how to effectively use the calculator.

The book covers various topics related to mathematics and scientific calculations, making it a useful tool for students and professionals alike. The publication is written in English and authored by Texas Instruments. It is an excellent addition to any collection of textbooks, education and reference materials, or study guides and test prep material.