DATAMATH CALCULATOR MUSEUM
|Date of introduction:||1975||Display technology:||Fluorescent|
|New price:||Display size:||7 + 2|
|Size:||6.3" x 3.2" x 1.25"|
|Weight:||7.9 ounces||Serial No:||300966|
|Batteries:||3*AA||Date of manufacture:||year 1975|
|AC-Adapter:||AD-1||Origin of manufacture:||Japan|
|Program steps:||Courtesy of:||Joerg Woerner|
On a first glance the Palmtronic F-2 could be called a scientifical calculator. You'll easily notice keys like ax, log or D»R and even EXP to enter the exponent of a number. Using the calculator is quite funny: The display is always in a mode with 7 digits of mantissa and 2 digits of exponent and the 7 digits define the precision of the calculator.
Even a simple operation like the square root of 9 takes a
whooping 4 seconds and ends in a display of 2.99998
00 ! Funny to tell that the leftmost digit of the display counts
some numbers during calculation time.
Immediately a second question will arise: 32= ? Entering the numerals and instructions is funny:
A deeper exploration of the keyboard gives some other mismatches like a missing memory and the trigonometric functions without their inverse counterpart. The internal construction shows a LSI MOS chip of the TMS1000 family similar to the one in the Texas Instruments SR-16. But the algorithms seem to be much less perfect, we know similar performance from the F-7.
Even Texas Instruments failed with some algorithm, don't miss the rare SR-40 prototype.
The same housing was used with the F-6
in Canon's scientific calculator line and the Palmtronic LD-10M
If you have additions to the above article please email: email@example.com.
© Joerg Woerner, July 2, 2002. No reprints without written permission.