01How Computers Work

Interactive circuit laboratory 06

Clock and register

Set an incoming byte and tick the clock to capture it into a register.

Prediction before clicking

The input can change repeatedly, but the register updates only when the simulated active clock edge occurs.

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What the simulator is showing you

The input can change repeatedly, but the register updates only when the simulated active clock edge occurs.

Try to predict the next output before changing the input. A prediction is evidence that you understand the mechanism. If the result surprises you, trace the bit values or the stored state explicitly.

Clocked storage, diagram of connected labeled components
Clocked storage. Follow the arrows to identify where information travels and what each block contributes.

Go deeper into the explanation

These experiments are simplified teaching models. The rules are intentional and inspectable, but they do not simulate transistor propagation delay, power consumption, or real processor pipeline details.