| 1. | A register in the microprocessor that keeps track of the answer or results of any arithmetic or logic operation is the ? | |
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stack pointer
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program counter
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instruction pointer
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accumulator
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Report Question| 2. | The interface chip for 8086 and 16 bit ADC is ? | |
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8259
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8255
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8253
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8251
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| 3. | A microprocessor is generally ? | |
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single chip SSI
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single chip MSI
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single chip LSI
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any of the above
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| 4. | A nibble corresponds to ? | |
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2 successive bits of data
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4 successive bits of data
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8 successive bits of data
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16 successive bits of data
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| 5. | In 8085 ? | |
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the upper 8 address bits appear on address bus and lower 8 bits on address data bus
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the lower 8 address bits appear on address bus and the upper 8 address bits appear on address data bus
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either upper or lower 8 address bits may appear at address bus
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None
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| 6. | In 8085 microprocessor with memory mapped I/O which of the following is true ? | |
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I/O devices have 16 bit addresses
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I/O devices are accessed during IN and OUT instructions
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There can be a maximum of 256 input and 256 output devices
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Logic operations can not be performed
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| 7. | In 8085, which of the following is an 8 bit register ? | |
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A
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SP
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PC
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ALL
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| 8. | In 8085, high level on INTR line can be recognised only if ? | |
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TRAP and RST lines are high
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TRAP and RST lines are not high
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TRAP line is high but not RST line
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RST line is high but not TRAP line
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| 9. | For an accurate clock period in 8085 it is preferable to use ? | |
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Crystal
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Crystal or LC resonant circuit
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Crystal or RC circuit
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LC or RC circuit
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| 10. | In 8085 the address space size is ? | |
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64 kbits
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64 k bytes
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32 kbits
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16 k bytes
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