| Friden
EC-132 - USA - 1964
|
|
| "This machine has the four
basic arithmetic functions: add, subtract, multiply and
divide. Square-rooting was an optional feature; compared
to the electromechanical calculators of the time this was
a major improvement, besides speed, quiet operation and
robustness. The Friden 132 calculator uses 'reversed
polish notation': 2+(3/8) is keyed in as 2 3 8 / +. This
principle, which obviates the use of parentheses, was
later followed in the well-known pocket calculators of
Hewlett-Packard. The results of the computation are shown
on a small CRT screen. The machine is built from separate
transistors, memory is implemented using a
magnetostrictive delay line. The machine is a fine
example of careful industrial design." |
|
Source: Bob Lichty |
|
