| 1. | Which one of the following interrupt is only level triggering ? | |
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TRAP
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RST 7.5
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RST 6.5 and RST 5.5
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RST 6.5
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Report Question| 2. | Temporary registers in 8085 are ? | |
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B and C
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D and E
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H and L
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W and Z
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| 3. | Register pair used to indicate memory ? | |
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B and C
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D and E
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H and L
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W and Z
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| 4. | Total numbers of output pins in 8085 microprocessor are ? | |
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13
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27
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30
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40
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| 5. | Basic steps of execution of an instruction is ? | |
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fetch ? execute ? decode
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decode ? fetch ? execute
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execute ? fetch ? decode
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fetch ? decode ? execute
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| 6. | The technique of assigning a memory address to each I/O device in the computer system is called ? | |
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memory-mapped I/O
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ported I/O
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dedicated I/O
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wired I/O
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| 7. | What type of circuit is used at the interface point of an output port ? | |
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decoder
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latch
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tristate buffer
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none of the above
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| 8. | I/O mapped systems identify their input/output devices by giving them a(n) ________ ? | |
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8-bit port number
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16-bit port number
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8-bit buffer number
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8-bit instruction
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| 9. | What type of circuit is used at the interface point of an input port ? | |
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decoder
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latch
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tristate buffer
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none of the above
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| 10. | The 8085A is a(n) ? | |
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16-bit parallel CPU
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8-bit serial CPU
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8-bit parallel CPU
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none of the above
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