CPU has 16 bit program counter. This means that the CPU can address I6K memory l

Question

CPU has 16 bit program counter. This means that the CPU can address I6K memory locations 32K memory locations 64K memory locations 256K memory locations CPU gets the address of next instruction to be processed from Instruction register Memory address register Index register Program counter CPU consists of ALU, Control Unit and Registers ALU and Control Unit ALU, Control Unit and Hard Disk ALU, Control Unit and Monitor Assembly language programs arc written using Hex code Mnemonics ASCII code None of these In an instruction the address part points to the address of actual data, the addressing mode is Immediate addressing Direct addressing Indirect addressing None of these The immediate addressing mode of instruction provides the operand in memory location Pointed by the PC Next to that of OP code Pointed by PC+1 None of these An X-bit binary word b7b6b5b4b3b2b1b0 as an integer x ranges from -128 to 128 -128 to 127 -256 to 256 None of the above

Explanation / Answer

1) C ( because there are 216 different memory locations 2^16/1024 = 64K )

2) D ( Program counter stores the index no. of instrruction register. Hence it points to the current instruction which is begin executed)

3) A

4) A

5) B (Immediate addressing means that the data to be used is hard-coded into the instruction itself. Hence direct addressing is the answer)

6) D (Actually next instruction is given by PC+4 hence I think none of them is correct)

7) B

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