8085 Microprocessor MCQ

61. Which company is the biggest player in the microprocessor industry?

  1. Motorola
  2. IBM
  3. intel
  4. amd

Answer: 3. intel

Explanation: 

Intel is the biggest player in the microprocessor industry.

Intel is the world’s largest manufacturer of PC microprocessors and the holder of the x86 processor architecture patent. x86 is the series of Intel microprocessor families that began with the 80286 microprocessor.

 

62. A typical personal computer used for business purposes would have ______ of RAM.

  1. 4 kb
  2. 16 k
  3. 64 k
  4. 256 k

Answer: 4. 256 k

Explanation: 

A typical personal computer used for business purposes would have 256 k of RAM.

 

63. The word length of a computer is measured in

  1. bytes
  2. millimeters
  3. meters
  4. bits

Answer: 4. bits

Explanation: 

The word length of a computer is measured in bits.

 

64. What are the three decisions making operations performed by the ALU of a computer?

  1. greater than
  2. less than
  3. equal to
  4. all of the above

Answer: 4. all of the above

Explanation: 

The three decisions making operations performed by the ALU of a computer is

  1. Greater than
  2. Less than
  3. Equal to

Greater than, Less than, and Equal to are the three decisions making operations performed by the ALU of a computer.

The greater-than sign is a mathematical symbol that denotes an inequality between two values. Since the development of computer programming languages, the greater-than sign and the less-than sign have been repurposed for a range of uses and operations.

Greater than and less than comparison of non-numeric data is performed according to a sort convention (such as, for text strings, lexicographical order) which may be built into the programming language and/or configurable by a programmer.

 

65. Which part of the computer is used for calculating and comparing?

  1. disk unit
  2. control unit
  3. alu
  4. modem

Answer: 3. alu

Explanation: 

ALU is used for calculating and comparing.

  • An arithmetic-logic unit (ALU) is the part of a computer processor (CPU) that carries out arithmetic and logic operations on the operands in computer instruction words.
  •  In some processors, the ALU is divided into two units, an arithmetic unit (AU) and a logic unit (LU).

Task of ALU

arithmetic operations (Add, Subtract, Multiplication, division)

logical operations (compare, complement)

Therefore, ALU is designat

 

66. Can you tell what passes into and out from the computer via its ports?

  1. data
  2. bytes
  3. graphics
  4. pictures

Answer: 2. bytes

Explanation: 

Bytes is passes into an out from the computer via its ports.

A port is a communications path into and out of a computer system over which data can be passed. A parallel port is one in which the bits of a data byte, or word, is passed in parallel.

 

67. What is the responsibility of the logical unit in the CPU of a computer?

  1. to produce result
  2. to compare numbers
  3. to control flow of information
  4. to do math works

Answer: 2. to compare numbers

Explanation: 

To compare numbers is the responsibility of the logical unit in the CPU of a computer.

A logical unit is a device or application program by which an end-user (an application program, a terminal user, or an input/output mechanism) gains access to an SNA network.

 

68. The secondary storage devices can only store data but they cannot perform

  1. arithmetic operation
  2. logic operation
  3. fetch operations
  4. either of the above

Answer: 4. either of the above

Explanation: 

Secondary storage devices such as flash memory, hard disk, floppy disks, magnetic tape, paper tape, etc are only used in the storage of data and it lacks arithmetic, logic, and fetches operations. Secondary storage is basically used to store data and files and retain their contents even without the power supply.

 

69. Which of the following memories allows simultaneous read and write operations?

  1. rom
  2. ram
  3. eprom
  4. none of above

Answer: 2. ram

Explanation: 

Ram memories allow simultaneous read and write operations. Random Access Memory (RAM) is primary-volatile memory and Read-Only Memory (ROM) is primary-non-volatile memory. It is also called read-write memory or the main memory or the primary memory.

 

70. Which of the following memories has the shortest access times?

  1. cache memory
  2. magnetic bubble memory
  3. magnetic core memory
  4. ram

Answer: 1. cache memory

Explanation: 

Cache memory has the shortest access times. Cache memory holds frequently used instructions/data that the processor may require next and it is faster access memory than RAM since it is on the same chip as the processor.

Scroll to Top