This app is a collection of basic electronic calculators. It is suitable for hobbyist, electronic engineers or professionals. This is the free version, which contains ads; you can also buy from the Market the PRO version of the app to support the developer, unlock more features and get rid of the ads. Basic tools • Resistor color code • Inductor color code • Resistor SMD marking & EIA-96 • dBm, dbW, dBuV converter • Resistors in series • Resistors in parallel • Two resistors in ratio • Voltage divider • Ohm's law • Y-Δ converter • L, C reactance • Complex number operation • RC charging time constant • RC filter • RL filter • LC circuit • 555 monostable • 555 astable • Wheatstone bridge • Trace width calculator • Battery capacity • Operational amplifier • LED calculator • RMS calculator • Range calculator • Temperature conversion • BJT bias voltage • Voltage regulator • Shunt regulator • Length converter • Limit 10 combinations of component values Digital Tools • Number converter • Logic gates • DAC R-2R • Analog-to-digital • 7-segment display • Minimization of boolean function • Half adder & full adder • Synchronous counter up to 6 states • Cyclic redundancy check CRC-8, CRC-16, CRC-32 • Hamming code Electronics resources • SI unit prefix • Physical quantities • Circuit symbol • ASCII table • 74xx series • CMOS 40xx series • Pinouts • C programming language • Python language • Common linux command for Raspberry Pi • Resistivity table • Permeability table • Permittivity table • Ampacity table • AWG table • Standard wire guage (SWG) table • World plug • EDA software • Flip-flop • SMD marking • Formulas Features in PRO version only • No Ads • No limitation of component values • Selectable 1%,5%,10%,20% of values • Complex matrix • Pi-pad attenuator • T-pad attenuator • Coil inductance • Poles & zeros calculator Pro version : http://play.google.com/store/apps/details?id=com.peterhohsy.eecalculatorpro Note : 1. For those who need support please email to the designated email. Do NOT use either the feedback area to write questions, it is not appropriate and that is not guaranteed that can read them. All trade names mentioned in this app or the other documentation provided by this app are trademarks or registered trademarks of their respective holder. This app is not related or affiliated in any way these companies.