CD4020BM BC 14-Stage Ripple Carry Binary Counters .
National Semiconductor
CD4020BC - 14-Stage/ 12-Stage Ripple Carry Binary Counters
CD4020BM BC 14-Stage Ripple Carry Binary Counters CD4040BM BC 12-Stage Ripple Carry Binary Counters CD4060BM BC 14-Stage Ripple Carry Binary Counters .
