Hewlett Packard HP-22

Serial Number 1512A21374: 1975, 12th week, America
Accessories Pouch

Manual: HP-22 Owner's Manual, Sep 1975, bound printout from the MoHPC CD-ROM
Condition Excellent!
Repairs 15.10.2002 Initially, the top segment of the 4th display digit from left was not functioning! I swapped the display module from the HP-21 and verified that indeed the module rather than a driver on the circuit board is broken.
With the new display the unit is now fully functional.
26.2.2003 Soldered small wires to the battery contacts to get a more reliable contact when using regular AA cells in a battery pack.
Acquired 2.10.2002
.
HP codename, series Turnip, Woodstock
Type, Precision, Input Mode Business, 10 BCD digits, exponent 99, Reverse Polish Notation
Programmable No
Memory 10 storage memories, not permanent
Display 11 digit 7 segment red LED plus sign
Special features
Original Pricing, Production 1.9.1975 ($165) - 1.5.1978 ($125)
Batteries 2x AA pack or power supply
Dimensions Length 12.7cm, Width 6.5cm, Height 2.9cm
Links HP-22 Owner's Handbook, Sep 1975 (PDF)
Comment
.
Back To Contents