Canon F-700

Date of introduction:  1994 Display technology:  LCD
New price:   Display size:  10 + 2
Size:  5.0" x 2.8" x 0.4"    
Weight:  2.3 ounces Serial No:  
Batteries:  1*CR2025 Date of manufacture:  
AC-Adapter:   Origin of manufacture:  China
Precision:  11  Integrated circuits:  NEC uPD75308
Memories:  6    
Program steps:   Courtesy of:  Joerg Woerner

This Canon F-700 is one of the typical "Do it all" calculators introduced in the 1990's.
It performs:

F-402: Statistical calculations
F-502: Scientific and 2-variable statistical calculations
F-603: Logical calculations
F-603: Solves linear equations with 2 variables
F-603: Complex number calculations
F-603: 12 metric conversions
F-603: Programmable with 64 steps and two programs
F-700: 6 user memories

F-700_PCB.jpg (49719 Byte)Searching the manufacturer of this typical OEM-calculator is easy, the printed circuit board (PCB) gives the designation Truly 105C. 

Mike Sebastian's "Calculator forensics" reveals with the uncommon result of 9.0000389918 the NEC uPD75308 as calculator brain, actually a common 4-bit microcomputer with integrated display drivers and enough RAM to implement a small programmable calculator.

The successor of the F-700 sports a two-line display, don't miss the F-720.

If you have additions to the above article please email:

Joerg Woerner, June 22, 2003. No reprints without written permission.