Computing device

(1) The structural and principal electrical circuitry of the calculator should be developed. The computer must be assembled on a microprocessor, have 6 analog inputs and 3 digital outputs, and be able to reprogram. Supply voltage (-) 5V. It is advisable to use the domestic element base (if possible inexpensive).
(2) For a single fee, topology and assembly can be developed in CAD type P-CAD or DipTrace.