Computer Organization Question(what are control wires exactly?)

Krosh

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Feb 15, 2010
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I'm trying to self-learn Computer Architecture and I understand that in a Von Neuman architecture that a control unit. My question is does control wires on schematics link back to the control unit circuitry, if so is it safe to infer that all control wires originate from the CU?

Additionally, are clock signals synonymous with control wires because I don't see how they are but perhaps I'm misunderstanding.

Thank you

Edit* When I say schematics, I mean electronic schematics and I picture little control wires flowing intra(inside the CPU) and outside the CPU(to say memory) conducting all the flow of data. Is this a right the right mental abstraction I should be taking here?
 

everlost

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Mar 8, 2013
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control wires are like switches, they turn on/off certain funtions of certain devices. this is how memory knows it should read from the data bus, or write to it.

all control wires (control bus) would lead to the Control unit. all processing would start and end with the CU.

nothing happens if the clock isnt counting. while there may be a signal on the control bus, the responding device will not change state/funtion until the begining of a clock cycle.
 

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