Ripple-Carry Binary Counter - CD4024
CD4024B is a ripple-carry binary counter. All counter stages are master-slave flip-flops. The state of a counter advances one count on the negative transition of each input pulse; a high level on the RESET line resets the counter to its all zeros state. Schmitt trigger action on the input-pulse line permits unlimited rise and fall times. All inputs and outputs are buffered.
Description above from Texas Instruments, see data sheet for more information - http://www.ti.com/lit/ds/symlink/cd4024b.pdf