Computer Basic Information
In synchronous transmission data from various users

None of these
Do not require header
Sometimes require header
Require header
All of these

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Computer Basic Information
Which of the following is true concerning personal computers?

None of these
They decrease the demand for mainframe computers
The electronic spreadsheet has been a primary reason for their popularity
Their future is not so bright owning to the improved cost-performance ratio of minis and mainframes
They have been most successful in the home

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

None of these
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
eight lines used to transfer data among the registers

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