#simulation

I have to simulate this schematic in LTspice. The problem is, that it uses an CMOS 4017N counter. I've only found one libary which has that element, but it has different inputs. The main problem i have, is that i dont have the VDD input. On the first picture is my project, and on the second one...

Hey there I'm currently working on project named metal detector circuit on Proteus there is no waveform showing on Proteus even there is no mistake in circuit can anybody help me in this regard.

I have worked on basic low speed PCBs and understand basics of the design methodologies for it. But I am curious about the hi-speed PCBs like smartphone motherboards.. How are the components placed so close to make the PCB compact? How are the tracks routed in this tight spaces? What...