Help Looking for a Chip

Thread Starter

sungchoiok

Joined Apr 23, 2011
15
all I have been able to find was the ripple counter, which adds binary according to clocks signals.

Is there a chip or a circuit design that does this?



And what would be the name for it...?
 

Papabravo

Joined Feb 24, 2006
21,226
Whatever the name the pattern of the animation shows the sequence:
1-2-4-8
and the easiest implementation is a shift register with the MSB fed back to the LSB. There should also be "RESET" logic to decode illegal states and make a transition to a legal state on the next clock, or a mechanism to load a value with a single bit on at power up.

BTW -- a ring counter is also known as a cyclic shift register
http://en.wikipedia.org/wiki/Ring_counter
and the twisted-ring counter or Johnson counter feeds back the complement of the MSB
 

Ron H

Joined Apr 14, 2005
7,063
Whatever the name the pattern of the animation shows the sequence:
1-2-4-8
and the easiest implementation is a shift register with the MSB fed back to the LSB. There should also be "RESET" logic to decode illegal states and make a transition to a legal state on the next clock, or a mechanism to load a value with a single bit on at power up.

BTW -- a ring counter is also known as a cyclic shift register
http://en.wikipedia.org/wiki/Ring_counter
and the twisted-ring counter or Johnson counter feeds back the complement of the MSB
The 4017 is a 5 stage Johnson counter with the 10 unique states decoded to 10 individual outputs. As others have pointed out, it is probably the easiest way to make the counter illustrated by the OP.
 
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