DATAMATH CALCULATOR MUSEUM
|Date of introduction:||January 19, 1974||Display technology:||LED|
|New price:||$795||Display size:||10 + 2|
|Size:||6.0" x 3.1" x 1.5"|
|Weight:||11.0 ounces||Serial No:||1333A14611|
|Batteries:||3*NiCd AA-size||Date of manufacture:||wk 33 year 1973|
|AC-Adapter:||HP-82002||Origin of manufacture:||USA|
|Precision:||10||Integrated circuits:||HP65-CPU, Mostek MK6111...MK6113|
|Program steps:||100||Courtesy of:||Peter Muckermann|
Hewlett-Packard introduced in January 19, 1974 with the HP-65 the first truly handheld programmable calculator. In a housing slightly larger than the HP-35 a card reader for tiny magnetic strips was accomodated. Users could store programs up to 100 steps lenght on the cards or buy pre-programmed cards from both Hewlett Packard or third party companies. The HP-65 was replaced after 2 years with the HP-67 featuring 224 merged program steps and 26 memories instead of 100 partially merged steps and 9 memories. Compare the specifications with the Texas Instruments SR-56 and SR-52.
The HP-65 uses the Reverse Polish Notation with the ENTER key instead the usual = key.
|The internal view of the HP-65 gives a very solid construction.|
|The main printed circuit board with the huge CPU and three ROM's (Read Only Memories).|
Learn more about Mostek
Calculator Integrated Circuits.
If you have additions to the above article please email: firstname.lastname@example.org.
© Joerg Woerner, May 3, 2002. No reprints without written permission.