Question: (a) Define wired-AND. (b) What is a pull-up resistor? Why is it used? (c) What types of TTL outputs can safely be tied together? (d)

(a) Define wired-AND.

(b) What is a pull-up resistor? Why is it used?

(c) What types of TTL outputs can safely be tied together?

(d) What is bus contention?

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