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| 1 . |
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It is normal for more than one decoder output to be active at the same time. [Hint]
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| 2 . |
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The select inputs to a multiplexer may also be called address lines. [Hint]
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| 3 . |
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Incandescent 7-segment displays are especially well suited for use in portable battery-operated devices. [Hint]
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| 4 . |
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Basically, a multiplexer changes parallel data inputs to a serial output. [Hint]
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| 5 . |
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Modern computers transfer data between different devices over a common set of connecting lines called a data bus. [Hint]
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| 6 . |
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A logic circuit which determines if one input is equal to another is called a comparator. [Hint]
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| 7 . |
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A device which determines which of two numbers is greater is a comparator. [Hint]
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| 8 . |
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A circuit that converts some binary code into a singular active output representing its numerical value is a comparator. [Hint]
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| 9 . |
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Output 6 of a 74138 octal decoder is selected when it is enabled by a data input of: [Hint]
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| 10 . |
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All outputs of the 74138 octal decoder are disabled (HIGH) when the enable inputs are:
[Hint]
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| 11 . |
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When data input I4 of a 74148 octal-to-binary encoder is active, the data output is:
[Hint]
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| 12 . |
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When data input I5 of a 74148 octal-to binary encoder is active, the data output is:
[Hint]
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| 13 . |
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A multiplexer is a device which converts some code into a recognizable number or character. [Hint]
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| 14 . |
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A four-line multiplexer must have as inputs four data inputs and two select inputs. [Hint]
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| 15 . |
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In order to select data input I3 of a 74151 eight-line multiplexer, the select inputs must be:
[Hint]
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| 16 . |
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In order to select data input I1 of a 74151 eight-line multiplexer, the select inputs must be:
[Hint]
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| 17 . |
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A device that selects one of several inputs to be placed on the output is a multiplexer. [Hint]
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| 18 . |
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A demultiplexer is a device that converts some code into a recognizable number or character. [Hint]
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| 19 . |
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The 74139 dual four-line demultiplexer functions as a demultiplexer if data input is on the line. [Hint]
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| 20 . |
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The outputs of a 7485 four-bit magnitude comparator when the inputs are A = 0110 and B = 1010 are: [Hint]
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| 21 . |
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The outputs of the 74138 octal decoder are enabled when the enable inputs are
. [Hint]
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| 22 . |
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When data input I1 of a 74148 octal-to-binary encoder is active, the data output is: [Hint]
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| 23 . |
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The device that is an application of SOP logic is a multiplexer. [Hint]
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| 24 . |
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Output 3 of a 74138 octal decoder is selected when it is enabled by a data input of:
[Hint]
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| 25 . |
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When outputs a, b, c, d, and g of a 7447 BCD-to-seven-segment code converter are active, the number displayed is 5. [Hint]
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| 26 . |
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A VARIABLE can be thought of as a piece of scrap paper that is used to write down some numbers that can be used later. [Hint]
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| 27 . |
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ADHL does not offer a multiplication operator. [Hint]
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| 28 . |
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A very important attribute of the conditional signal assignment statement is its sequential operation. [Hint]
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| 29 . |
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In HDL, a process is usually thought of as a wire connecting two points in a circuit. [Hint]
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| 30 . |
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A demultiplexer takes an input and turns it into a binary number. [Hint]
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