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tracing through digital circuits IC chips

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dannydavis

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tracing through digital circuits IC chips

When tracing through these components:
Encoders
Decoders
Flip Flops
Counters
Shift Registers
Multiplexer
Demultiplexer

How do u know if they are functioning properly? or how can i trace through each one of these components ? how would u guys do this to verify them?

Its hard to use a DVM meter or oscilloscope sinse they have multiple inputs and outputs , plus i would need alot of signal generators for the logic inputs , resets, enable inputs

All the new PCB's are surface mount IC chips so you can't use Logic clips or logic monitor because they are only made for dual in-line package IC chips not for surface mount or through hole IC chips

How can i "STEP" a counter and a shift register through a complete cycle and verify inputs, outputs, resets, clears, and other signals?

How can i "STEP" through a Encoder and decoder inputs and outputs?

The Encoders outputs are not binary but numerical or address lines? or LCD displays

So you can't use a DVM meter on the outputs of a Encoder or inputs of a decoder because its not logical binary states but numerical address codes? instead of using a DVM meter can i use a LCD display and probe the outputs of a encoder?
 

davidgrm

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A logic analyser is really what you want. You could try building a simple one.
 

dannydavis

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how can i build a simplier one? what can i use?

Added after 10 minutes:

using a logic analzer, which "mode" do i use to monitor the outputs of encoders and multiplexers?

Since the outputs of encoders and multiplexers are address code or encoded code you can't use a DVM meter or oscilloscope right ? how would u monitor the signals?

I printed out the data sheets of each IC chips , than i test each input and output using a DVM meter, logic probe, oscilloscope but how can i "CYCLE" the inputs,resets,enables,outputs all at once?

A logic analyers doesn't have multiple signal generators its just for monitoring , so what can i use to provide multiple logic state inputs

1.) multiple inputs 1,2,3,4,5,etc
2.) Reset input
3.) Enable input
4.) Clock input

What can i use please?
 

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