Keith Midson:
Hewlett Packard 35 calculator
Keith Midson:
HP-97
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
Keith Midson:
Hewlett Packard 75C
