2018-08-302022-02-022018-08-302022-02-02https://hdl.handle.net/11124/172498Date of manufacture: 1976-1990.Described as "a major leap forward in fully-programmable personal calculators, the HP-67 is the most powerful personal calculators HP has ever made." Features include: fully merged keycodes, more memory (224 merged program steps and 26 memories), program merging, subroutine nesting, etc. Adjusted for inflation, its $450 price in 1976 equates to $1,720 2011 dollars.born digitaldigital photographsCalculatorsImage