I would like to receive the sugestions on the order in which I should lay out the track for a complex 4 layer board. I have 150 parts of which there are 38 ICs , 35 LEDs, a high density connector and the remaining are resistors and caps. The detectors and the LED selector are I2C at that is only 100Khz clock. The I2C clock is not active after the desired LED and detector are selected.
My question is that should I lay the power and ground first? should I lay the longest runs first?
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