# How Do I Design A Mod 6 Counter Without The Use Of Logic Gate?

#### KaiL

Joined Aug 30, 2014
69
Design a mod-6 counter by any two MSI chips.
• No logic gate is allowed to use

I am able to design a circuit of a mod 6 counter using a JK flip flop chips and a NAND gate. However , how can i do that without the use of logic gate?

What MSI chips should I use to achieve this result?

Last edited:

#### ericgibbs

Joined Jan 29, 2010
13,654
hi,
Are diodes allowed.?

[ I would use a 74LS92.], one chip.

#### KaiL

Joined Aug 30, 2014
69
Hi
I am only allowed to use 2 msi chips to implement this. By the way , does 74ls92 has a nand gate build in or???

#### ericgibbs

Joined Jan 29, 2010
13,654
Hi,
Would you post your attempt at the question, we can take it from there.

A 74LS92 is divide by 12 counter IC, but its split internally into two parts a divide by 2 and a divide by 6.

#### MrCarlos

Joined Jan 2, 2010
400
Hello KaiL

It is difficult to find a MSI IC that contains no logic gates.
Besides that you can design with a MOD 6 counter.

The option, someone else is recommending You, seems good (74LS92).
It does, internally, more than a NAND gate.
Virtually all MSI IC’s have internally gates.

By the way: You have not answered the question that makes you ericgibbs in post #2. About use diodes

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#### KaiL

Joined Aug 30, 2014
69
Hi
My Project only allows the use of 2 MSI chips z_Z and no other components are to be used.

#### JoeJester

Joined Apr 26, 2005
4,390
Which two MSI chips have you chose to use?

#### djsfantasi

Joined Apr 11, 2010
7,842
I must be missing something. I believe the thread starter has had his question answered until he proves otherwise.

The requirement is somewhat vague. Is an MSI chip allowed if it is a logic chip? My interpretation is MSI chip trumps logic gate and hence can be used if it's a logic MSI chip.

I guess this is the basis for my confusion. Assuming this is true, the question has been asked answered.

Where am I wrong?