Question

A decade counter is used for dividing a pulse frequency exactly by

A) 8
B) 9
C)11
D)10

Answer 1

It is used as divide by 6 counter by supplying pulse at input 1 and grounding reset pins R3 and R4 and connecting QA with input 2. 7490 IC can work like bi –quinary counter, which is used to store decimal digits in the form of 4 bit binary numbers.