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Why is the data bus in most microprocessors bidirectional while the address bus is unidirectional?
Data Bus: These lines are used to send data to memory by output ports and to receive data from memory by input ports. Thus, data bus lines are bi-directional.
Address Bus: On these lines the CPU send out the address of the memory location or I/O port that is to be written to or read from. Here, the communiation is one-way, the address is send from CPU to memory and I/O port and as these lines are unidirectional.
A combinational circuit has 3 inputs A, B, C and output F. F is true for following input combinations A is False, B is True A is False, C is True A, B, C
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How many select lines will a 32:1 multiplexer will have ? Ans. 5 select lines will be required for 32 inputs, as 2 5 = 32.
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