digital-electronics-msi-logic-circuits Related Question Answers
26. A device that selects one of several inputs to be placed on the output is a multiplexer.
27. A logic circuit that determines if one input is equal to another is called a comparator.
28. A VARIABLE can be thought of as a piece of scrap paper used to write down some numbers that can be used later.
29. Output 3 of a 74138 octal decoder is selected when it is enabled by a data input of:
A0 = 1
A1 = 1
A2 = 0
30. When data input I1 of a 74148 octal-to-binary encoder is active, the data output is: A0 = 0
A1 = 0
A2 = 1
31. A four-line multiplexer must have as inputs four data inputs and two select inputs.
32. In HDL, a process is usually thought of as a wire connecting two points in a circuit.
33. A demultiplexer is a device that converts some code to a recognizable number or character.
34. Output 6 of a 74138 octal decoder is selected when it is enabled by a data input of: A0 = 1
A1 = 1
A2 = 0
35. A circuit that converts some binary code into a singular active output representing its numerical value is a comparator.
36. All outputs of the 74138 octal decoder are disabled (HIGH) when the enable inputs are:
37. Incandescent 7-segment displays are especially well suited for use in portable battery-operated devices.
40. The outputs of a 7485 four-bit magnitude comparator when the inputs are A = 0110 and B = 1010 are: A < B is 1
A = B is 0
A > B is 1
41. In order to select data input I3 of a 74151 eight-line multiplexer, the select inputs must be:
42. A very important attribute of the conditional signal assignment statement is its sequential operation.
43. The outputs of the 74138 octal decoder are enabled when the enable inputs are
.
44. A multiplexer is a device that converts some code into a recognizable number or character.
46. In order to select data input I1 of a 74151 eight-line multiplexer, the select inputs must be:
48. When outputs a, b, c, d, and g of a 7447 BCD-to-seven-segment code converter are active, the number displayed is 5.
49. When data input I4 of a 74148 octal-to-binary encoder is active, the data output is:
A0 = 1
A1 = 1
A2 = 0
50. It is normal for more than one decoder output to be active at the same time.
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