| 
| HP-21 Owner's Handbook |  | Author: | Hewlett-Packard |  | Language: | English |  | File Download: | hp21-oh-en.pdf |  | Size: | 24.10 MB |  | Cover: |  |  | Folder: |  |  | Product Category: | Calculators |  | Item Type: | Owner's Manual |  | Part Number: | 00021-90001 |  | Model: | HP-21 |  | Date Published: | September 1975 |  | Document Format: | Color Scan |  | Pages: | 74 |  | Scan Producer: | hpcalc.org |  | Scan Quality: | A |  | Scan Resolution: | 400 dpi |  | Document Status: | Perfect Scan |  | Date Uploaded: | 2022-05-04 |  |