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This signal is used as the system clock for devices connected with the microprocessor.

X1, X2

CLK OUT

CLK IN

IO/M

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The clock frequency of an 8085 microprocessor is 5 MHz. If the time required to execute an instruction is 1.4 ?s, then the number of T-states needed for executing the instruction is

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Which of the following is true about Control and status signals?

These signals are used to identify the nature of operation.

There are 3 control signal and 3 status signals.

Three status signals are IO/M, S0 & S1.

All of the above

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Register of microprocessor (?P) which keeps track of the execution of program and which contain the memory address of next instruction to be executed is called

Index register

Program counter

Memory address register

Instruction register

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What is true about Program counter?

It is an 8-bit register, which holds the temporary data of arithmetic and logical operations.

When an instruction is fetched from memory then it is stored in the program counter

It provides timing and control signal to the microprocessor

It is a 16-bit register used to store the memory address location of the next instruction to be executed.

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8085 microprocessor is an 8-bit microprocessor designed by?

IBM

Dell

Intel

VAX

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