Exercise 3.29 · 习题

Exercise 3.29: Another way to construct an

or-gate is as a compound digital logic device, built from and-gates and

inverters. Define a procedure or-gate that accomplishes this. What is

the delay time of the or-gate in terms of and-gate-delay and

inverter-delay?

练习 3.29：构造或门的另一种方式是将其作为一种复合数字逻辑器件，由与门和反门搭建而成。请定义一个实现此功能的过程 or-gate。用 and-gate-delay 和 inverter-delay 来表达或门的延迟时间。