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RPN Engineering Calculator? by J. A. Associates

More than 200 solutions with 5 keypads: Standard/Engineering¹/Trig/Magnetics¹/Convert. The Convert Keypad is new, (thousands of conversions + over 40 constants). It has a help system with individual tips. You can choose among Fixed/Scientific/Engineering notation and select between Degrees/Radians for your calculations. It has a running tape display (Prints!), and keyboard entry option for most of the common functions. ¹Allows selecting units

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Sample Champion by Purebits

Sample Champion is a powerful real-time software tool designed for high precision acoustic measurements. With Sample Champion you will be able to measure the Impulse Response of a room, or analyze loudspeaker Frequency Responses using the MLS (Maximum Length Sequence) method. It has been designed for acoustical technicians, sound engineers, scientists and students. Sampling rate up to 192 kHz, 24 bit support. FFT length up to 64K points.

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HAMIC by SweetScape

HAMIC, the HAM Intelligent Calculator, is designed to aid HAM perform a number of calculations. HAMIC has a simple to use, but powerful graphical interface that allows solving simple circuits such as resistors in series or parallel, or more complex circuits such as L networks or T networks. As well, other calculations such as SWR and reactance conversions are supported.

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