The 101 Electronic Statistical Machine manual provides a technical description of the IBM 101, an electromechanical unit designed to perform statistical tabulation operations on punched-card data. The manual outlines the machine’s major functions—including card input, edit testing, arithmetic operations, classification, counting, accumulating, sorting, and printed output—and explains the sequence in which these functions are applied as cards pass through the ystem. It also describes the machine’s control features, operating speeds, model variations, and typical use cases such as file searching, sequence checking, and summary preparation. The text is intended as a reference for personnel responsible for operating, wiring, or integrating the IBM 101 into punched-card data-processing workflows.
The number 727 has been handwritten on the front cover of this copy of the manual in red marker. Otherwise, this copy is in good condition with minimal signs of wear or discolouration. All pages are intact and legible, and the binding is secure.
