Exam 4: Combinational Logic Circuits

A logic circuit contains the following: a 3- input NOR gate with inputs A, B, and C, a 2- input NOR gate with inputs C and D, and a 2- input AND gate that is driven by the NOR gate outputs. The correct Boolean expression for the circuit output (X) is:

An _______ input allows a circuit to pass an input waveform to its output.

A combinatorial logic circuit has memory characteristics that "remember" the inputs after they have been removed.

TTL family of chips are indicated by a seventy- four at the beginning of the part number.

One method of determining an output from a logic circuit is to simply track the inputs through the gates and determine the output.

Using Boolean algebra, the complete simplification of Z = (D + E + F) (D + E + F) gives us:

-K- map 4- 1 indicates that_______ input combinations cause the circuit to produce a HIGH output.

_________________is an organization that has established a standard format for transferring programming data for PLDs.

A logic circuit allows a signal (A) to pass to the output without inversion when either (but not both) of the control signals (B₁ and B₂) are HIGH. Which of the following is the output expression for this circuit?

Which CMOS series has both pin and electrical compatibility with its TTL counterpart?

Using Boolean algebra to simplify the expression Z = , the completed first step would result in the expression:

Generally speaking, when AND and OR gates are used to enable signals, the output signal will follow the desired input signal exactly.

A five gate- two input logic circuit could be described by a five input truth table with 32 combinations.

-Refer to Table 4- 1. The sum- of- products expression that correctly defines the output of the logic circuit is:

CMOS stands for complementary metal- oxide- _______ .

-Actual circuit implementation of the sum- of- products expression for Table 4- 1 would require (as a minimum):

Under normal circumstances, the output from a(n) _______ does not equal its input.

Which of the following is the simplest form of the expression Y = ABC[AB + C(BC + AC)]?

Using Boolean algebra, the expression Y = simplifies to:

A logic probe must be connected to _______ and ground in order to function. 82)