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Digital Electronics Exam

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kaylarenee's version from 2016-12-13 14:37

Section 1

Question Answer
1110+01010100
12+8010100 System overflow needs a 5-bit
-9+310100
10001001+000100101010001
17h+B9D0
C3h+34hF7
What is a Demultiplexer1 input going in many coming out
Multiplexer had 32 data output lines how many selected lines would it haveYou would have 8 niputs to 32 outputs
What is the meaning of rise timeThe time it takes for the line in the waveform rise
Propagation DelayA delay time for an input wave to propagate through an IC to the output
memorize

Section 2

Question Answer
Encoder A device that converts a weighted numeric iput line to an equlivant digital code, such as hex or octal
DeCoderA device that converts digital code such as hex or octal into a single out[ut representing its numeric value
memorize

Section 3

Question Answer
Sink currentcurrent ebtering the output or input of a logic gate
Setup time
A CLK pin with a no bubble indicates what
Explain what EN pin indicate encoded pin
What is a asynchronous pin
Fall TimeThe time required for a digital pulse to fall from 90% down to 10% of its maximum voltage level
TTLtransister transister logic
Active Low0
Active High1
Set A condition that produces a digital HIGH state
ResetA condition that produces a digital LOW
memorize