7473 is a J-K flip flop with low active clear, not a counter. You should tie it HIGH through a pull up resistor so you retain the ability to reset.
Generally 74xxx series chips asynchronous (Set and Clear) are active low and need a pullup resistor to VCC if they are not used. 1K to 10K ohms is good. Not much of a need to calculate much. 4xxx series CMOS are usually active high and need to be grounded or a pull down resistor to ground. 10K to 100K ohms.
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