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HP-65 in original hard case with manuals, software "Standard Pac" of magnetic cards, soft leather case, and charger The HP-65 is the first magnetic card-programmable handheld calculator. Introduced by Hewlett-Packard in 1974 at an MSRP of $795 [ 1 ] (equivalent to $5,069 in 2024) [ 2 ] , it featured nine storage registers and room for 100 ...
PPC Journal was an early hobbyist computer magazine, originally targeted at users of HP's first programmable calculator, the HP-65. It originated as 65 Notes and the first issue was published in 1974. [1] It later changed names in 1978 to PPC Journal and in 1980 to PPC Calculator Journal. [1]
A desktop version with built-in thermal printer was sold as the HP-97 at a price of $750. [2] Collectively, they are known as the HP-67/97. [3] Marketed as improved successors to the HP-65, the HP-67/97 were based on the technology of the "20-series" of calculators (HP-25, HP-19C etc.) introduced a year earlier. The two models are functionally ...
Follow-on calculators used varying mechanical packaging but most were operationally similar. The HP-25 was a smaller, cheaper model of a programmable scientific calculator without magnetic card reader, with features much like the HP-65. The HP-41C was a major advance in programmability and capacity, and offered CMOS memory so that programs were ...
The HP 35s allows both label and line number addressing in programs. The HP 33s had only label addressing. With only 26 labels, it was difficult to write programs making use of the entire 30 KB of memory. The memory in the HP 35s is also usable for data storage, in the form of an extra 801 numbered memory registers.
The number itself, which may appear in various places on the page, can be referred to as a page number or as a folio. [1] Like other numbering schemes such as chapter numbering, page numbers allow the citation of a particular page of the numbered document and facilitates to the reader to find specific parts of the document and to know the size ...
In some business software applications, where groups of users have access to only a sub-set of the application's full functionality, a user guide may be prepared for each group. An example of this approach is the Autodesk Topobase 2010 Help [ 6 ] document, which contains separate Administrator Guides , User Guides , and a Developer's Guide .
The HP-25 was introduced as a cheaper (US$195 MSRP) alternative to the ground-breaking HP-67. Similar to the way the HP-55 was a cheaper alternative to the HP-65. To reduce cost, the HP-25 omitted the HP-67's magnetic card reader, so it could only be programmed using the keyboard. After switching off, the program was lost and had to be typed in ...