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tutorial5 - ERG2020 A&B Tutorial5 YU Xi Outline •...

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Unformatted text preview: ERG2020 A&B Tutorial5 26/02/2007 YU Xi Outline • Logic symbol • Documentation standard II • Brief review of HDL • Combinational circuit II Logic symbol • Several basic symbols have been introduced • What is DeMorgan equivalent symbol? 1 logic equivalent from DeMorgan law 2 whether to use it depends on active level in design (in fact, bubble is used to present low active level) In quiz #1 What does RESTART_L mean? First, RESTART represents the function of the signal. Second, L represents the active level. • Signal names are chosen to be descriptive • Show the active level in the name • It will show how the input signal affecting the circuit or the output signal. Documentation standard II • The importance of documentation standard—describe the function of circuit • Different kinds of documentation standards: schematic diagram timing diagram circuit descriptions • Timing diagram—delay in transmission...
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tutorial5 - ERG2020 A&B Tutorial5 YU Xi Outline •...

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