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Keith Midson: Hewlett Packard 35 calculator
Keith Midson: HP 35 and 35S
Keith Midson: HP 65 programmable calculator
Keith Midson: HP 41CX Blanknut
Keith Midson: HP 15C Limited Edition & Original
Keith Midson: HP 15C Limited Edition
Keith Midson: Hewlett Packard 28C
Keith Midson: HP 15C Limited Edition
Keith Midson: HP 12C calculators 1981 & 2011
Keith Midson: Hewlett Packard 75D pocket computer
Keith Midson: Early Hewlett Packard palmtops
Keith Midson: slide rule's demise ...
Keith Midson: HP 18C Frankencalc
Keith Midson: HP 94F is alive!
Keith Midson: a pair of 45's
Keith Midson: Hewlett Packard graphing timeline
Keith Midson: HP 21 & Yokogawa HP 21 calculators
Keith Midson: Hewlett Packard 32S 50th Anniversary edition
Keith Midson: Hewlett Packard 67 - clear case
Keith Midson: Hewlett Packard 70
Keith Midson: Hewlett Packard 27
Keith Midson: Hewlett Packard 65 programmable calculator
Keith Midson: Hewlett Packard 34C
Keith Midson: Hewlett Packard 55 calculator
Keith Midson: Hewlett Packard 33E prototype
Keith Midson: Hewlett Packard 19C
Keith Midson: Hewlett Packard 19C & 29C
Keith Midson: HP 38C prototype and production