Problems:

Answer the following with reference to the sequencer file HB$3$:$0$ shown in Figure $12-38$:

a$.$ Assume that output bit addresses $0,\frac{2}{0}$ through $\frac{0\mathrm{.}2}{15}$ are controlling associated output pilot lights PL$1$ through PL$16.$ State the status of each light for steps $1$ through $4.$

b$.$ What output bit addresses could be masked? Why?

c$.$ State the status of each bit of output word $0$:$2$ for step $3$ of the sequencer cycle.

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