Math

powers of 10 cheat

notation value symbol word(s) examples
1e0 (1) * 10 ^ (0) = 1 C/Python "e" notation, not to be confused with the base of the natural logarithm e used in RCL (resistor/capacitor/inductor) electronics calculations.
1e-12 0.000 000 000 001 p pico pF = picoFarad (capacitance)
1e-9 0.000 000 001 n nano nF
1e-6 0.000 001 µ micro µA or uA = microAmpere (current)
1e-3 0.001 m milli mA (current), mV = milliVolt (voltage)
...
1k5 1.5 kOhm = 1500 Ohm k = 1000 frequently used resistor value notation 4k7=4700 0k0=zero-Ohm-bridge=short-circuit
u1 0.1 µF = 100nF frequently used capacitor notation u33=330nF 1u=1.0µF
64k * 8 64 * 1024 * 8 bit = 64 kilobytes k = 1024 frequently used EEPROM memory size notation "512k = 64k * 8" actually means 64kb
5 mA 0.005 A current electrons flowing "the module is drawing 2 Ampere"
100 mAh 100 milliAmpereHours capacity 1 mA for 100 hours or 100 mA for one hour or ... "a 1600mAh battery"