Show that subregister A, in Fig. 10-21 is zero at the termination of (a) The decimal multiplication

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Show that subregister A, in Fig. 10-21 is zero at the termination of 

(a) The decimal multiplication as specified in Fig. 10-22, and 

(b) The decimal division as specified in Fig. 10-23.

Fig. 10-21

B E A Be 103 102 101 10 Ae BCD arithmetic unit 103 102 10 10 . SC k = 4 10 10 10   Q Increment Decrement

Fig. 10-22

Multiply Multiplicand in B Multiplier in Q #0 A, +Q, B, A 0, B0 SC + k a QL = 0 dshr AQ SC SC-1 + SC #0 A+ A 

Fig. 10-23

#0 A B = 0 QL + QL +1 EA + A +B + 1 E

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