74LS90

Features:-

   -A decade counter is a binary counter that is designed to count to 1010b.
  - By changing the modes of Decade Counter IC, the chip can count up to other maximum numbers and return to zero.
   -The Decade Counter IC consists of four master-slave JK flip-flops internally connected to provide a MOD-2 (count-to-2) counter and a MOD-5 (count-to-5) counter.
   -Decade counter is one that counts in decimal digits, rather than binary. A decade counter may have each or other binary encodings.