# I want to design using by cascading 74*163 ic

Discussion in 'Electronics Homework Help' started by Atakan, Dec 18, 2016.

1. ### Atakan

11
0
Dec 18, 2016
I want to design such as count at 33 start and run 77 reset.
Is it true my image?

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2. ### (*steve*)¡sǝpodᴉʇuɐ ǝɥʇ ɹɐǝɥdModerator

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Jan 21, 2010
I think you want this.

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3. ### Atakan

11
0
Dec 18, 2016
how can i interconnect a b c d and Qa Qb Qc Qd, such as where 33? and where 77?

11
0
Dec 18, 2016
is it true?

File size:
114 KB
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75
5. ### (*steve*)¡sǝpodᴉʇuɐ ǝɥʇ ɹɐǝɥdModerator

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Jan 21, 2010
I'm sorry,. I can't understand what you want.

6. ### Atakan

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0
Dec 18, 2016
i want to design counter 33 to 77. but i want just using 74*163. because i am not sure what i do.

5,164
1,087
Dec 18, 2013
Thanks

8. ### Atakan

11
0
Dec 18, 2016
I have an exam. A question will be cascading counters and digital 74x163. Such as this is starting at count 33 and finishing 77 otherwise starting at count 0 and finishing 80
Etc. I could not do this question i could not draw with my hand. I am just doing 0- 15 at counting circuit

9. ### (*steve*)¡sǝpodᴉʇuɐ ǝɥʇ ɹɐǝɥdModerator

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Jan 21, 2010
First you need to understand how to cascade the devices so you can count to a higher number than 15.

Then you need to understand how to load a number into them.

Then you need to work out the logic to decide if you have reached a certain maximum count.

You might want to look for an 8 bit magnitude comparator as that will make the last part easier.

10. ### Herschel Peeler

401
66
Feb 21, 2016
Pins 1, 2 and 9 have no input. Yes, they need to be connected together, but they need an input from something. The Preset inputs need to be either high or low, not floating.

If this example is good for you, I have most TTL and CMOS chips done up this way. I used to teach this stuff.

[MOD edited to place image into post]

Last edited by a moderator: Dec 18, 2016