Home » Digital Electronics » MSI Logic Circuits

Why are control inputs included in an HDL magnitude comparator?

For cascading the chips
For control signal input
For signal control
For internal interconnections

Correct Answer: For cascading the chips

← Previous Question Next Question→

More Questions from MSI Logic Circuits

The data transmission system shown in below has a problem; the parity error output is always high. A logic analyzer is used to examine the system and shows that the DATA IN on the left matches the DATA OUT on right. What might be causing the problem?
What are the outputs of a 7485 four-bit magnitude comparator when the inputs are A = 1001 and B = 1010?
Refer to the figure given below. The logic function generator being implemented with the multiplexer in this circuit produces a constant LOW on the output. The ABC inputs are checked and appear to be pulsing; also, the 0–7 and EN inputs are checked with the scope and all appear to be at 0 V. A check with the DMM confirms that power is on. What is the problem, and what should be done to correct it?
Which statement best describes the given figure, and what is the function of the terminal labeled EN?
What is the purpose of a decoder's inputs?
Referring to the figure given below, what output code will appear on the output (A3,A2,A1,A0) when the 5 key is pressed?
It is suspected that the comparator in the figure given below has a problem. The inputs are activated in the table shown below and the corresponding outputs noted. What is most likely wrong with the circuit? For P0 – P3 = 1 and Q0 – Q3 = 0, P > Q = 1, P = Q = 1, P < Q = 0 For P0 – P3 = 0 and Q0 – Q3 = 1, P > Q = 0, P = Q = 1, P < Q = 1 For P0 – P3 = 1 and Q0 – Q3 = 1, P > Q = 0, P = Q = 1, P < Q = 0
Refer to the keyboard encoder in figure (a). Sometimes when the 5 key is pressed, the system attached to the keypad does not respond. The 5 input on the 74147 is monitored with a digital storage scope while repeatedly pressing the 5 key, and the waveform in figure (b) is obtained; the P above the trace indicates the points at which the technician pressed the key. What is most likely wrong with the circuit?
Output 5 of a 74138 octal decoder is selected when it is enabled by a data input of:
Which is the decimal number for the BCD number, 10110110?

Discussion & Comments

No comments yet. Be the first to comment!

Join Discussion