• A collectible and scarce vintage Hewlett-Packard owner's handbook and programming guide for the HP-41C and HP-41CV alphanumeric full performance programmable calculators.
• Title page reads The HP-41C/41CV Alphanumeric Full Performance Programmable Calculator Owner's Handbook and Programming Guide and is dated September 1980.
• Introductory material explains the philosophy of the HP-41C/41CV systems, a sample problem, and major configuration features to orient new users.
• Part I, Using Your Calculator, covers operating keys, display and keyboard layout, entering and clearing numbers, chain calculations, and display control including automatic switching and scrolling.
• Additional sections describe the automatic memory stack and ALPHA register, use of the standard function catalog, storing and recalling numbers and ALPHA strings, and a wide range of mathematical, trigonometric, logarithmic, exponential, and statistical functions.
• Part II, Programming Your Calculator, provides step-by-step guidance on simple programming, program editing and memory, handling program interruptions, using ALPHA strings, and creating branching and looping structures.
• Later chapters and appendices treat advanced programming and operation topics such as flags, indirect control, key mapping, the COPY function, error handling, and practical application programs for the HP-41C/41CV.
• Illustrations throughout include detailed keyboard diagrams, labeled key functions, program flowcharts, and shaded display windows showing sample keystrokes with their resulting numeric or ALPHA outputs.
• Back matter includes appendices, reference tables, and a position index to help locate functions, along with additional diagrams for system configuration and peripheral connections.
• Physical format is a large white spiral-bound softcover manual printed in the U.S.A. by Hewlett-Packard Company, 1000 N.E. Circle Blvd., Corvallis, Oregon, with identification number 00041-90313 appearing on the title page and back cover.

• Condition: This scarce vintage 1980 HP-41C/41CV spiral-bound manual remains a complete, usable reference. Front cover shows surface rubbing, scattered small spots, and corner and edge wear. Back cover has noticeable soiling, stains, creasing, and curling along the spine edge and outer corners. Wire binding is intact but shows discoloration and abrasion from handling. Previous owner's name is handwritten in marker on the inside front cover, with additional ink marks along the outer text block edge and a fabric patch taped inside the front. Interior pages shown are clean, legible, and firmly held in the binding with no loose or missing pages seen.

• Ships from a Pet-Free and Smoke-Free Home.

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