MSI Logic Circuits Questions

• A demultiplexer is a device that converts some code to a recognizable number or character.
• A demultiplexer takes an input and turns it into a binary number.
• When outputs a, b, c, d, and g of a 7447 BCD-to-seven-segment code converter are active, the number displayed is 5.
• ADHL does not offer a multiplication operator.
• A multiplexer is a device that converts some code into a recognizable number or character.
• A device that selects one of several inputs to be placed on the output is a multiplexer.
• A VARIABLE can be thought of as a piece of scrap paper used to write down some numbers that can be used later.
• A circuit that converts some binary code into a singular active output representing its numerical value is a comparator.
• A logic circuit that determines if one input is equal to another is called a comparator.
• The select inputs to a multiplexer may also be called address lines.
• It is normal for more than one decoder output to be active at the same time.
• In HDL, a process is usually thought of as a wire connecting two points in a circuit.
• When data input I1 of a 74148 octal-to-binary encoder is active, the data output is: A0 = 0 A1 = 0 A2 = 1
• Basically, a multiplexer changes parallel data inputs to a serial output.
• 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
• Modern computers transfer data between different devices over a common set of connecting lines called a data bus.
• A very important attribute of the conditional signal assignment statement is its sequential operation.
• In order to select data input I3 of a 74151 eight-line multiplexer, the select inputs must be:
• Output 6 of a 74138 octal decoder is selected when it is enabled by a data input of: A0 = 1 A1 = 1 A2 = 0
• A device that determines which of two numbers is greater is a comparator.