HP-65 in extrem guter Erhaltung mit Beiblatt handsigniert (mit Echtheits Zertifikat !) TOP

Hallo !

Verkaufe hier meinen TOP HP-65 in Originalverpackung.
Wenn man nicht genau hinsieht, könnte er "neu" sein ;-)
Mi

Hier nun noch einige Herstellerangaben:

HP-65

The HP-65 was a stunning calculator. Just 18 months after introducing the first pocket calculator with transcendental functions, HP introduced a pocket calculator that was programmable with a magnetic card reader/writer. The HP Journal introduced it as "The Personal Computer" long before that term had become common. At the time, if people had any access to a computer it was probably via a keypunch machine. To this day, the HP-65 is impressive - even to HP 48 users.

Users could write programs up to 100 lines in length and record them on blank cards, or they could buy pre-programmed cards. These tiny cards (see pictures) had magnetic media on one side and a writable surface on the other. After passing a card through the calculator, the card could be slid into a slot just above the top row of keys where the writable side of the card served as key labels for the calculator's five program-defined keys.

The HP-65 was housed in a case that looked much like the HP-35, but it was really slightly larger and very different to accommodate the card reader. If you look at the picture, notice how the silver band now goes around the display rather than below it. This little change kept HP-65's from looking prematurely old due to silver rubbing off when the calculator was switched on.
Keys and Shifts

The HP-65 had up to 4 functions per key. The normal function, a function printed in gold on the keypad above and a function printed in blue on the slanted front key surface. (This was the first appearance of the "tall" HP keys which continued to be used for years.) The fourth function was accessed using the f-1 key which produced the inverse of the f key. (e.g. f-1 LN gave you e^x.) This allowed HP to get four functions per key without a lot of clutter.
Programming

The HP-65 had 100 lines of space and used label addressing.