Computer Parts

What is a transmission delay?
Answered by Discovery Channel
  • Discovery Channel

    Discovery Channel

  1. Transmission delay is one of the main factors limiting the speed of a CPU. A computer chip is little more than a bunch of very small transistors that are connected by incredibly tiny wires. A transistor is basically an electrical on/off switch. When one of these transistors changes its state to "on," it charges the wire that connects it to the next transistor with electrons. When it changes its state to "off," it must drain the electrons out of that wire. The time it takes to drain the electrons out of a wire is the transistor's transmission delay. The smaller the wires on a chip, the less time it takes to drain electrons out of them.

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