COMPUTER SCIENCE AND ENGINEERING
COMPUTER ARCHITECTURE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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A bi-directional path between internal components
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A uni-directional path between internal components
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A tri-directional path between internal components
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A bi-directional buffer between internal components
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Detailed explanation-1: -The data bus is a bidirectional bus and can carry the data in both the direction along the data bus. For example, the CPU can send the data to be stored into the RAM . Similarly, the CPU can also perform the fetch operation for retrieving the data from the specific memory location.
Detailed explanation-2: -Data bus is used to transfer data from one unit to another unit of the computer system. Microprocessor can read data from the memory or write data to the memory. So, the data bus is bidirectional. Was this answer helpful?
Detailed explanation-3: -A bidirectional bus buffer (transceiver) is a type of logic circuit whose I/O pins can be configured as input and output to receive and transmit data. Since a transceiver allows the signal direction to be changed via a control signal (DIR), it is used along a bus line through which data are transferred bidirectionally.
Detailed explanation-4: -Normally Control bus is unidirectional.
Detailed explanation-5: -Data bus is bidirectional because data flow in both directions, from microprocessor to memory or Input/Output devices and from memory or Input/Output devices to microprocessor. Length of Data Bus of 8085 microprocessor is 8 Bit (That is, two Hexadecimal Digits), ranging from 00 H to FF H.