MOC – My Own Creation. Any LEGO creation designed and built by a LEGO fan without instructions. Generally pronounced “mock”.
555 The 555 is a common IC. It can be used as timer, timer delay, for pulse generation, oscillator applications, as a flip-flop element. 741 It is a special type of amplifier circuit used since 1968. It is also common. 741 requires both positive and negative supply rails. LM324 Essentially similar like that of 741. […]