



With 300 bytes to play with, I was able to write several implementations of my favorite programming example, the Gamma function for this machine. Although the programming model is still unduly simplistic (the only kind of branching possible is a conditional jump back to the beginning of program space), these calculators offer more program memory and, most significantly, the ability to review and edit programs. To my no small pleasure, lately I began receiving Casio programmable calculators that significantly improve upon the programmability of their predecessors. A conditional expression is used to compute the correct result for negative arguments (the machine must be in radians mode also note the difference between minus signs, '-', and subtraction signs, '−'): Ans→X: The program below, intended to demonstrate the fx-4000P's programming model, uses the Lanczos-approximation to accurately compute the logarithm of the Gamma function. At last! (Well, I did have a German manual and the English manual for the EC-4020, but it's not quite like the real thing.) I must say, it is still a lovely, very capable machine my only two complaints are the somewhat hard to read display and a less than ideally robust construction. In 2012, some 13 years after I received my first EC-4020 and 11 years after I came across the first fx-4000P, a kind calculator owner, Aron from NJ sent me his old fx-4000P, this time with an English manual. At the time, I did not yet know about the fx-4000P model number, so the find represented a bit of a mystery. I first came across the fx-4000P in its OEM guise as the Radio Shack EC-4020. They just don't make machines like this anymore! With a full set of scientific functions and a whopping 550-step program memory, this is definitely a serious engineering tool. This is a no-compromise, high-end, classic programmable. If that doesn't solve the problem, then you can consider replacing the calculator with a modern equivalent.After initially offering such marvellous calculators as the fx-201P or the FX-602P, Casio went steadily downhill most of their later programmable models have extremely limited programmability, both in terms of capacity and in terms of functionality. If you have a Casio fx-4000P that is no longer working, you can first try replacing the 2x3V cell batteries. You can download the Casio fx-4000P manual from this external link. The calculator was manufactured in Japan.

It has 44 keys, and an LCD (liquid crystal) display. The Casio fx-4000P is a programmable calculator with 12 digits precision and algebraic logic. The calculator home page Home Download FAQ Online Calc Articles Database Resources About ☰ Casio fx-4000P
