Where are the other signals in a timing diagram?
Below the clock signal, each of the other necessary signals are listed, vertically synchronized with the clock signal at the top to show you what the end result of a particular signalling sequence is. To start with, we’ll need to see the clock, data, latch, and qa output signals.
How to calculate the output of a timing diagram?
Then, from the truth table we can see that the output is 1 if either A = 1, irrespective of the values of B and C (i.e. the bottom four rows of the truth table), OR if ( ( B = 0) AND ( C = 0)). So we can deduce that Y = A + ( B ¯ ⋅ C ¯). (We will look at more rigorous ways of obtaining such information in later chapters.)
How is the lifetime of a module represented in a timing diagram?
In a timing diagram, the lifetime of a module is represented by a vertical line, with time increasing down the vertical axis. The following example illustrates the use of a timing diagram for a sewage pumping system. The label at the top of a timeline names the module (pump controller, sensor service, and pump service).
What does the diagram on Rheingold heavy show?
The diagram now shows the shifting of the zero into QA, resulting in its output being shifted into QB, and all of that being triggered by the cycling of the latch. We can show this movement of the lone one through our shift register by listing the remaining outputs and sequencing it all out.
When to use a greyed out section in a timing diagram?
There can be several definitions associated with a greyed out section in a timing diagram, however it is most often used in the event where the processing system simply doesn’t care what the values are.
How are arrows used in a timing diagram?
Messages sent from one object to another can be depicted using simple arrows. The start and the end points of each arrow indicate when each message was sent and when it was received. A state lifeline shows the change of state of an item over time.