Category Archives: Computers, Pocket
In the early 1970s, “handheld” or “pocket” calculators and computers were introduced. They were small and portable and could easily be carried to the field in a pocket of a surveyor’s vest.
Computers, Pocket
In the early 1970s, “handheld” or “pocket” calculators and computers were introduced. They were small...
Computer, Pocket HP33E
The HP-33E and HP-33C were the basic scientific programmable members of the 30 series. The...
Computer, Pocket HP25
The HP-25 was introduced in 1975. It was called a calculator by Hewlett Packard, however,...
Computer, Pocket HP41CX
Hand held computer Hewlett Packard Model 41CX S/N 2851S22388.
Computer, Pocket, Monroe 324
Calculator, Monroe 324 (s/n 5312849), charger pack and adapter with cables, three instruction books, all...
Computer, Pocket, Monroe 324G
Computer, Monroe 324G, s/n 5313747, approximately 23 cm (l) X 14 cm (w) X 7...
Computer, Pocket, HP35
The HP-35, Hewlett Packard’s first pocket calculator, was introduced in 1972.
Computer, Pocket, HP21
Hand held calculator Hewlett Packard Model 21 S/N 1607S19611.
Computer, Pocket, HP31E
Hand held calculator Hewlett Packard Model 31E, S/N 1843S33243.