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counter

How to use timer and interrupts on Arduino boards.
    Update 07/24/2013 04/24/2013 Example 3 has been updated to work with Arduino v1.x.Added ArduinoTimer101.zip examples source code for Arduino v1.x .    Read more

how to get 7493 to work

i have been trying for the last few nights tyring to get my counter to work

the wireing should be correct ,

Vcc-5V

grnd- ground

input a, to pin 9 on the arduino and it is set to a constant 150 PWM

input b - connected to Qa

Qb, Qc Qd, to LEDs

do i need to hook up the R pins?

 i know the PWM works

and there is power going to the chip

but no counting is going on, so any help would be appreciated