The back of the device shows a slightly protruding battery case cover, which slides out to reveal the compartment for the four AAA alkaline batteries used for primary power, and a CR2032 lithium button cell used for memory backup when primary power is down or being changed.

The device consumes power at the rate of 0.06W, and turns itself off automatically after about 6 minutes of time spent without any keypad activity.

The bottom line is reserved for function key menu tips, and the rest is available for the graphics and character display.

This is divided among storage blocks for programs, statistics, matrices, lists, static and dynamic graphs and their associated settings, functions, recursions, equations, financial data, and variables (all of which are global).

[2] The serial link cable was designed and U.S. patented (5504864) by Larry Berg of Purple Computing.

It has a 2.5mm stereo phono plug on one end, the patented electronic circuit inside the plastic bump and a DE-9F on the other for connecting to the serial port of a PC.

The CFX-9850G was later replaced with updated models that added features and fixed bugs, the CFX-9850G Plus, Ga Plus, GB Plus, and GC Plus.

CFX models are capable of displaying three colors: orange, blue and green.

The calculators include program capacity of 28 to 64 kilobytes of memory depending on model: The CFX-9850GB PLUS and CFX-9950GB PLUS models have a built-in software library, consisting of programs that perform complicated calculations and data processing.

For example, operations on differential equations, digital caliper measurements, capacitor charge curves, figure rotations and Riemann sums.