Q.1

How many bits are used in the data bus?

  • 7
  • 8
  • 9
  • 16
Q.2

Which of the following is not a basic element within the microprocessor?

  • microcontroller
  • arithmetic-logic unit (ALU)
  • temporary register
  • accumulator
Q.3

How many bits are used in the address bus?

  • 7
  • 8
  • 9
  • 16
Q.4

Exceptions to the 8085 microprocessor normal operation are called:

  • jump instructions
  • decoding
  • interrupts
  • jump instructions or interrupts
Q.5

How many buses are connected as part of the 8085 microprocessor?

  • 2
  • 3
  • 5
  • 8
Q.6

When referring to instruction words, a mnemonic is:

  • a short abbreviation for the operand address
  • a short abbreviation for the operation to be performed
  • a short abbreviation for the data word stored at the operand address
  • shorthand for machine language
Q.7

An address bus is also called a unidirectional bus.

  • True
  • False
Q.8

It takes two memory locations (16 bits each) to store an address in the 8085 system.

  • True
  • False
Q.9

Which of the following is not a computer bus?

  • data bus
  • timer bus
  • control bus
  • address bus
Q.10

Since microprocessor CPUs do not understand mnemonics as they are, they have to be converted into __________.

  • hexadecimal machine code
  • high-level language
  • assembly language
  • hexadecimal machine code and assembly language
Q.11

A register in the microprocessor that keeps track of the answer or results of any arithmetic or logic operation is the _________.

  • stack pointer
  • program counter
  • instruction pointer
  • accumulator
Q.12

What is the difference between mnemonic codes and machine codes?

  • There is no difference.
  • Machine codes are in binary, mnemonic codes are in shorthand English.
  • Machine codes are in shorthand English, mnemonic codes are in binary.
  • Machine codes are in shorthand English, mnemonic codes are a high-level language.
Q.13

A coprocessor is a microprocessor designed with a limited instruction set optimized to perform arithmetic operations very quickly.

  • True
  • False
Q.14

A compiler is a translation program that converts high-level instructions into a set of binary instructions (machine code) for execution.

  • True
  • False
Q.15

The technique of assigning a memory address to each I/O device in the SAM system is called:

  • wired I/O
  • I/O mapping
  • dedicated I/O
  • memory-mapped I/O
Q.16

A program that contains nothing but strings of zeros and ones is called a(n) ________.

  • machine language program
  • assembly language program
  • interpreted program
  • binary language program
Q.17

The __________ program is used to convert mnemonic code to machine code.

  • debug
  • C++
  • fortran
  • assembler
Q.18

A(n) ________________ is the time it takes a microprocessor to fetch and execute a complete instruction.

  • instruction cycle
  • machine cycle
  • timing cycle
  • write cycle
Q.19

Which bus is bidirectional?

  • data bus
  • control bus
  • address bus
  • multiplexed bus
Q.20

To keep the number of IC pins to a minimum, the 8085 uses a multiplexed bus.

  • True
  • False
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