5. Consider two counters implemented by 74190 and 74161, respectively, in Fig. 2. Suppose that counters in Figs. 3(a) and (b) are mod-N, counter and mod-N, counter. What are the values of Ni and Na, respectively? (10%) VCC U1 VCC VCC LSB DA SB OC D 01 NP QA OB or > ODH (TEN LOAD LDKO CLK MAX MIN AD TR OA OB OC 1) OD CIEN TOAD UD Rob MAX CIK MIN PIN 74161 74161 nu n 40 HE sv 74190 74190 (a) Fig 3. Two counters implemented by: (a) 74190 (b) 74161. (b)