Commodore F4902
Brief History
Commodore has a full spectrum of calculators from four-function basic models to most sophisticated scientific, or programmable types. To reach even lower prices, the 1978's new models were planned to assemble in Hong-Kong, using MPS 7561 chip family from MOS Technologies to made a wide variety of calculators built on identical printed circuits. The completed five models (financial F4902, the algebraic logic scientific SR4912 and SR9190, RPN scientific SR4921, and the programmable scientific P50) use the well-known housing, but have cheaper buttons rather than injection molded keys. The invade of mass-produced japanese calculators with LCD displays don't let these models to become hits, and confirms the management of Commodore that researching computers rather than calculators is the only way to survive. A year later, after running out the last series Commodore had stopped manufacturing calculators.
The F4902 from the series Decision Maker has a lot of new functions compared to earlier financial models: in addition to interest calculations, it can compute standard deviation, linear regression and margin too.
| Manufacturer: | Commodore Business Machines (USA/Hong-Kong) |
| Mfg. date: | 1978 |
| Size: | 8,1×15,2×4 cm |
| Weight (ready for operate): | n.a. |
| Type: | financial |
| Capacity: | 11 digits (input/display) 11 digits (internal precision) |
| Operating logic: | algebraic |
| CPU: | MOS MPS7561 004 |
| Registers: | 2 standard (with saving the pending operation) 1 bracket 1 memory (with aritmetic) |
| Features: | %calculation with percent +/-change sign (direct entry of negative numbers) RVexchange registers (X-Y) Ffloating-point notation Sqrsquare root x2square 1/xreciprocal logexponential and logarithmical functions (10- and e-base) yxraising to power SDone variable statistics: calculating mean and standard deviation LRtwo-variable statistics: linear regression n!factorial |
| Display: | 12 digit LED |
| Power: | 9V battery or adaptor |
F4902
Inside of the F4902
Similar items