How many bits are used in the data bus
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How many bits are used in the data bus in 8085 microprocessor?
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Solution:
Data bus is a group of conducting wires which carries Data only. It 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 (I;e, two Hexadecimal Digits), ranging from 00 H to FF H. (H denotes Hexadecimal).
When it is write operation, the processor will put the data (to be written) on the data bus, when it is read operation, the memory controller will get the data from specific memory block and put it into the data bus.
The width of the data bus is directly related to the largest number that the bus can carry, such as an 8 bit bus can represent 2 to the power of 8 unique values, this equates to the number 0 to 255.A 16 bit bus can carry 0 to 65535.
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