Computer Basic Information
The data bus in 8080A/8085 microprocessor is a group of

None of these
eight lines used to transfer data among the registers
sixteen bidirectional lines that are used for data transfer between the microprocessor and memory
eight bidirectional lines that are used to transfer 8 bits between the microprocessor and its I/O and memory
eight unidirectional lines that are used for I/O devices

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Computer Basic Information
Why is the width of the data bus so important to the processing speed of a computer?

The wider it is, the slower the computer's processing speed
The wider it is, the more data that can fit into main memory
The wider it is, the greater the computer's processing speed
The narrower it is, the greater the computer's processing speed
The data bus isn't important to the processing speed of a computer

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Computer Basic Information
The term USER INTERFACE refers to-

What the user sees on the screen and how they interact with it.
The means by which the user interacts with peripheral devices on the computer.
All of these
How the operating system responds to user commands

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