Computer Basic Information
Backing storage is so named because it

is always kept at the back of the CPU
None of these
is slow and backward
lags behind the main memory
backs up the computer

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

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

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