Clock
Clock turns up in 2 fields: machine shop, electronics. Here is what it means to the people in each one.
Clock in machine shop
To align a part or tool to a specific rotational angle.
Clocking is the act of rotating a workpiece, fixture, or tool so that its features line up perfectly with a specific axis before clamping it down. Machinists clock parts using a dial indicator to ensure cross-holes, flats, or keyways are machined at the exact right angle relative to existing geometry.
"Make sure you clock that hex stock so the flat is completely parallel to the table before you hit cycle start."
Clock in electronics
A continuous square wave signal that synchronizes the timing of digital circuits.
A clock provides the heartbeat for a digital system, oscillating between high and low logic states at a precise frequency. Flip-flops and microprocessors rely on its rising or falling edges to trigger state changes simultaneously across the board. Without a stable clock, data moving through sequential logic would quickly become corrupted by timing mismatches.
"The processor is halting because the clock is dropping cycles."