# Help modify a MOD 13 counter

#### dl324

Joined Mar 30, 2015
12,802
so the consideration that must be taken in to account is the binary number and the NAND gate.
That much was given to you by your instructor.

What is another name for an asynchronous counter? Do you know why they use that other term?

Thread Starter

#### northpark

Joined Oct 27, 2020
14
That much was given to you by your instructor.

What is another name for an asynchronous counter? Do you know why they use that other term?
ripple counter and I'm not sure why this other name is used

#### dl324

Joined Mar 30, 2015
12,802
ripple counter and I'm not sure why this other name is used
What is the difference between an asynchronous (ripple) counter and a synchronous counter.

#### Delta prime

Joined Nov 15, 2019
843
Well, it's now in the homework section. The TS needs to: 1) Show the circuit; and 2) Show his best attempt at answering the question
Respectfully , point taken.
thank you, Sir.

Thread Starter

#### northpark

Joined Oct 27, 2020
14
What is the difference between an asynchronous (ripple) counter and a synchronous counter.
asynchronous does not need clock to change state

Thread Starter

#### northpark

Joined Oct 27, 2020
14
asynchronous does not need clock to change state
only the first jk is clocked

#### dl324

Joined Mar 30, 2015
12,802
asynchronous does not need clock to change state
How do you arrive at that statement? You clock the first stage and each subsequent stage is clocked by the previous stage.

Thread Starter

#### northpark

Joined Oct 27, 2020
14
How do you arrive at that statement? You clock the first stage and each subsequent stage is clocked by the previous stage.
yes

#### dl324

Joined Mar 30, 2015
12,802
ripple counter and I'm not sure why this other name is used
The term is used because the clock ripples through the flip flops versus a synchronous counter where all flip flops are clocked at the same time.

Does this give you a clue as to what your instructor is looking for?

Thread Starter

#### northpark

Joined Oct 27, 2020
14
The term is used because the clock ripples through the flip flops versus a synchronous counter where all flip flops are clocked at the same time.

Does this give you a clue as to what your instructor is looking for?
yes thank you